diff --git a/applets/pbot-vm/host/bin/vm-exec b/applets/pbot-vm/host/bin/vm-exec
index 4fd94e09..3361fcf1 100755
--- a/applets/pbot-vm/host/bin/vm-exec
+++ b/applets/pbot-vm/host/bin/vm-exec
@@ -246,7 +246,7 @@ sub configure_context($context, $config) {
     # set any undefined values to default values
     $context->{nick}         //= 'vm';
     $context->{channel}      //= 'vm';
-    $context->{lang}         //= 'c2x';
+    $context->{lang}         //= 'clang2x';
     $context->{'vm-domain'}  //= DOMAIN;
     $context->{'vm-addr'}    //= ADDR;
     $context->{'vm-health'}  //= HEALTH;
diff --git a/applets/pbot-vm/host/lib/Languages/_c_base.pm b/applets/pbot-vm/host/lib/Languages/_c_base.pm
index 6246e1b7..b5e082a1 100755
--- a/applets/pbot-vm/host/lib/Languages/_c_base.pm
+++ b/applets/pbot-vm/host/lib/Languages/_c_base.pm
@@ -22,7 +22,7 @@ sub initialize {
 
   $self->{sourcefile}      = 'prog.c';
   $self->{execfile}        = 'prog';
-  $self->{default_options} = '-Wextra -Wall -Wno-unused-parameter -pedantic -Wfloat-equal -Wshadow -std=c11 -lm -Wfatal-errors';
+  $self->{default_options} = '-Wextra -Wall -Wno-unused-parameter -Wno-unused-variable -pedantic -Wfloat-equal -Wshadow -std=c11 -lm -Wfatal-errors';
   $self->{options_paste}   = '-fdiagnostics-show-caret';
   $self->{options_nopaste} = '-fno-diagnostics-show-caret';
   $self->{cmdline}         = 'gcc -ggdb -g3 $sourcefile $options -o $execfile';
diff --git a/applets/pbot-vm/host/lib/Languages/c11.pm b/applets/pbot-vm/host/lib/Languages/c11.pm
index 0b615414..ef309564 100755
--- a/applets/pbot-vm/host/lib/Languages/c11.pm
+++ b/applets/pbot-vm/host/lib/Languages/c11.pm
@@ -14,7 +14,7 @@ sub initialize {
 
   $self->{sourcefile}      = 'prog.c';
   $self->{execfile}        = 'prog';
-  $self->{default_options} = '-Wextra -Wall -Wno-unused-parameter -pedantic -Wfloat-equal -Wshadow -std=c11 -lm -Wfatal-errors -fsanitize=alignment,undefined -fsanitize-address-use-after-scope -fno-omit-frame-pointer';
+  $self->{default_options} = '-Wextra -Wall -Wno-unused-parameter -Wno-unused-variable -pedantic -Wfloat-equal -Wshadow -std=c11 -lm -Wfatal-errors -fsanitize=alignment,undefined -fsanitize-address-use-after-scope -fno-omit-frame-pointer';
   $self->{options_paste}   = '-fdiagnostics-show-caret';
   $self->{options_nopaste} = '-fno-diagnostics-show-caret';
   $self->{cmdline}         = 'gcc -gdwarf-2 -g3 $sourcefile $options -o $execfile';
diff --git a/applets/pbot-vm/host/lib/Languages/c2x.pm b/applets/pbot-vm/host/lib/Languages/c2x.pm
index 346bff7e..52cb4c59 100755
--- a/applets/pbot-vm/host/lib/Languages/c2x.pm
+++ b/applets/pbot-vm/host/lib/Languages/c2x.pm
@@ -14,7 +14,7 @@ sub initialize {
 
   $self->{sourcefile}      = 'prog.c';
   $self->{execfile}        = 'prog';
-  $self->{default_options} = '-Wextra -Wall -Wno-unused-parameter -pedantic -Wfloat-equal -Wshadow -std=c2x -lm -Wfatal-errors -fsanitize=alignment,undefined -fsanitize-address-use-after-scope -fno-omit-frame-pointer';
+  $self->{default_options} = '-Wextra -Wall -Wno-unused-parameter -Wno-unused-variable -pedantic -Wfloat-equal -Wshadow -std=c2x -lm -Wfatal-errors -fsanitize=alignment,undefined -fsanitize-address-use-after-scope -fno-omit-frame-pointer';
   $self->{options_paste}   = '-fdiagnostics-show-caret';
   $self->{options_nopaste} = '-fno-diagnostics-show-caret';
   $self->{cmdline}         = 'gcc -gdwarf-2 -g3 $sourcefile $options -o $execfile';
diff --git a/applets/pbot-vm/host/lib/Languages/c89.pm b/applets/pbot-vm/host/lib/Languages/c89.pm
index eb6f3fd8..9fcd8e26 100755
--- a/applets/pbot-vm/host/lib/Languages/c89.pm
+++ b/applets/pbot-vm/host/lib/Languages/c89.pm
@@ -14,7 +14,7 @@ sub initialize {
 
   $self->{sourcefile}      = 'prog.c';
   $self->{execfile}        = 'prog';
-  $self->{default_options} = '-Wextra -Wall -Wno-unused-parameter -pedantic -Wfloat-equal -Wshadow -std=c89 -lm -Wfatal-errors -fsanitize=alignment,undefined';
+  $self->{default_options} = '-Wextra -Wall -Wno-unused-parameter -Wno-unused-variable -pedantic -Wfloat-equal -Wshadow -std=c89 -lm -Wfatal-errors -fsanitize=alignment,undefined';
   $self->{options_paste}   = '-fdiagnostics-show-caret';
   $self->{options_nopaste} = '-fno-diagnostics-show-caret';
   $self->{cmdline}         = 'gcc -gdwarf-2 -g3 $sourcefile $options -o $execfile';
diff --git a/applets/pbot-vm/host/lib/Languages/c99.pm b/applets/pbot-vm/host/lib/Languages/c99.pm
index dd54bbe1..ccdaec1b 100755
--- a/applets/pbot-vm/host/lib/Languages/c99.pm
+++ b/applets/pbot-vm/host/lib/Languages/c99.pm
@@ -14,7 +14,7 @@ sub initialize {
 
   $self->{sourcefile}      = 'prog.c';
   $self->{execfile}        = 'prog';
-  $self->{default_options} = '-Wextra -Wall -Wno-unused-parameter -pedantic -Wfloat-equal -Wshadow -std=c99 -lm -Wfatal-errors -fsanitize=alignment,undefined';
+  $self->{default_options} = '-Wextra -Wall -Wno-unused-parameter -Wno-unused-variable -pedantic -Wfloat-equal -Wshadow -std=c99 -lm -Wfatal-errors -fsanitize=alignment,undefined';
   $self->{options_paste}   = '-fdiagnostics-show-caret';
   $self->{options_nopaste} = '-fno-diagnostics-show-caret';
   $self->{cmdline}         = 'gcc -gdwarf-2 -g3 $sourcefile $options -o $execfile';
diff --git a/applets/pbot-vm/host/lib/Languages/clang11.pm b/applets/pbot-vm/host/lib/Languages/clang11.pm
index 5342e1fe..48c1d584 100755
--- a/applets/pbot-vm/host/lib/Languages/clang11.pm
+++ b/applets/pbot-vm/host/lib/Languages/clang11.pm
@@ -11,7 +11,7 @@ sub initialize {
 
   $self->{sourcefile}      = 'prog.c';
   $self->{execfile}        = 'prog';
-  $self->{default_options} = '-Wextra -Wall -Wno-unused-parameter -pedantic -Wfloat-equal -Wshadow -std=c11 -lm -Wfatal-errors -fsanitize=integer,undefined,alignment -fsanitize-address-use-after-scope -fno-omit-frame-pointer';
+  $self->{default_options} = '-Wextra -Wall -Wno-unused-parameter -Wno-unused-variable -pedantic -Wfloat-equal -Wshadow -std=c11 -lm -Wfatal-errors -fsanitize=integer,undefined,alignment -fsanitize-address-use-after-scope -fno-omit-frame-pointer';
   $self->{options_paste}   = '-fcaret-diagnostics';
   $self->{options_nopaste} = '-fno-caret-diagnostics';
   $self->{cmdline}         = 'clang -gdwarf-2 -g3 $sourcefile $options -o $execfile';
diff --git a/applets/pbot-vm/host/lib/Languages/clang2x.pm b/applets/pbot-vm/host/lib/Languages/clang2x.pm
index 720c8811..7dccfcf0 100755
--- a/applets/pbot-vm/host/lib/Languages/clang2x.pm
+++ b/applets/pbot-vm/host/lib/Languages/clang2x.pm
@@ -14,7 +14,7 @@ sub initialize {
 
   $self->{sourcefile}      = 'prog.c';
   $self->{execfile}        = 'prog';
-  $self->{default_options} = '-Wextra -Wall -Wno-unused-parameter -pedantic -Wfloat-equal -Wshadow -std=c2x -lm -Wfatal-errors -fsanitize=integer,alignment,undefined -fsanitize-address-use-after-scope -fno-omit-frame-pointer';
+  $self->{default_options} = '-Wextra -Wall -Wno-unused-parameter -Wno-unused-variable -pedantic -Wfloat-equal -Wshadow -std=c2x -lm -Wfatal-errors -fsanitize=integer,alignment,undefined -fsanitize-address-use-after-scope -fno-omit-frame-pointer';
   $self->{options_paste}   = '-fcaret-diagnostics';
   $self->{options_nopaste} = '-fno-caret-diagnostics';
   $self->{cmdline}         = 'clang -gdwarf-2 -g3 $sourcefile $options -o $execfile';
diff --git a/applets/pbot-vm/host/lib/Languages/clang89.pm b/applets/pbot-vm/host/lib/Languages/clang89.pm
index 33293ddd..73409e70 100755
--- a/applets/pbot-vm/host/lib/Languages/clang89.pm
+++ b/applets/pbot-vm/host/lib/Languages/clang89.pm
@@ -14,7 +14,7 @@ sub initialize {
 
   $self->{sourcefile}      = 'prog.c';
   $self->{execfile}        = 'prog';
-  $self->{default_options} = '-Wextra -Wall -Wno-unused-parameter -pedantic -Wfloat-equal -Wshadow -std=c89 -lm -Wfatal-errors -fsanitize=integer,undefined,alignment';
+  $self->{default_options} = '-Wextra -Wall -Wno-unused-parameter -Wno-unused-variable -pedantic -Wfloat-equal -Wshadow -std=c89 -lm -Wfatal-errors -fsanitize=integer,undefined,alignment';
   $self->{options_paste}   = '-fcaret-diagnostics';
   $self->{options_nopaste} = '-fno-caret-diagnostics';
   $self->{cmdline}         = 'clang -gdwarf-2 -g3 $sourcefile $options -o $execfile';
diff --git a/applets/pbot-vm/host/lib/Languages/clang99.pm b/applets/pbot-vm/host/lib/Languages/clang99.pm
index 8ff68314..cdbcad8b 100755
--- a/applets/pbot-vm/host/lib/Languages/clang99.pm
+++ b/applets/pbot-vm/host/lib/Languages/clang99.pm
@@ -14,7 +14,7 @@ sub initialize {
 
   $self->{sourcefile}      = 'prog.c';
   $self->{execfile}        = 'prog';
-  $self->{default_options} = '-Wextra -Wall -Wno-unused-parameter -pedantic -Wfloat-equal -Wshadow -std=c99 -lm -Wfatal-errors -fsanitize=integer,undefined,alignment';
+  $self->{default_options} = '-Wextra -Wall -Wno-unused-parameter -Wno-unused-variable -pedantic -Wfloat-equal -Wshadow -std=c99 -lm -Wfatal-errors -fsanitize=integer,undefined,alignment';
   $self->{options_paste}   = '-fcaret-diagnostics';
   $self->{options_nopaste} = '-fno-caret-diagnostics';
   $self->{cmdline}         = 'clang -gdwarf-2 -g3 $sourcefile $options -o $execfile';
diff --git a/applets/pbot-vm/host/lib/Languages/clangpp.pm b/applets/pbot-vm/host/lib/Languages/clangpp.pm
index 63cdcef1..c7d1c48a 100755
--- a/applets/pbot-vm/host/lib/Languages/clangpp.pm
+++ b/applets/pbot-vm/host/lib/Languages/clangpp.pm
@@ -15,7 +15,7 @@ sub initialize {
   $self->{name}            = 'clang++';
   $self->{sourcefile}      = 'prog.cpp';
   $self->{execfile}        = 'prog';
-  $self->{default_options} = '-std=c++14 -Wextra -Wall -Wno-unused-parameter -pedantic -Wfloat-equal -Wshadow -lm -Wfatal-errors -fsanitize=alignment,undefined';
+  $self->{default_options} = '-std=c++14 -Wextra -Wall -Wno-unused-parameter -Wno-unused-variable -pedantic -Wfloat-equal -Wshadow -lm -Wfatal-errors -fsanitize=alignment,undefined';
   $self->{options_paste}   = '-fcaret-diagnostics';
   $self->{options_nopaste} = '-fno-caret-diagnostics';
   $self->{cmdline}         = 'clang++-3.7 -I/usr/include/x86_64-linux-gnu/c++/5/ -gdwarf-2 -g3 $sourcefile $options -o $execfile';
diff --git a/applets/pbot-vm/host/lib/Languages/cpp.pm b/applets/pbot-vm/host/lib/Languages/cpp.pm
index f4fafb23..cba97752 100755
--- a/applets/pbot-vm/host/lib/Languages/cpp.pm
+++ b/applets/pbot-vm/host/lib/Languages/cpp.pm
@@ -15,7 +15,7 @@ sub initialize {
   $self->{name}            = 'c++';
   $self->{sourcefile}      = 'prog.cpp';
   $self->{execfile}        = 'prog';
-  $self->{default_options} = '-std=c++14 -Wextra -Wall -Wno-unused -pedantic -Wfloat-equal -Wshadow -lm -Wfatal-errors -fsanitize=alignment,undefined';
+  $self->{default_options} = '-std=c++14 -Wextra -Wall -Wno-unused-parameter -Wno-unused-variable -pedantic -Wfloat-equal -Wshadow -lm -Wfatal-errors -fsanitize=alignment,undefined';
   $self->{options_paste}   = '-fdiagnostics-show-caret';
   $self->{options_nopaste} = '-fno-diagnostics-show-caret';
   $self->{cmdline}         = 'g++ -ggdb -g3 $sourcefile $options -o $execfile';
diff --git a/lib/PBot/VERSION.pm b/lib/PBot/VERSION.pm
index e9af0910..dd4a065d 100644
--- a/lib/PBot/VERSION.pm
+++ b/lib/PBot/VERSION.pm
@@ -25,8 +25,8 @@ use PBot::Imports;
 # These are set by the /misc/update_version script
 use constant {
     BUILD_NAME     => "PBot",
-    BUILD_REVISION => 4783,
-    BUILD_DATE     => "2024-09-08",
+    BUILD_REVISION => 4784,
+    BUILD_DATE     => "2024-09-19",
 };
 
 sub initialize {}