diff --git a/applets/compiler_vm/host/bin/vm-exec b/applets/compiler_vm/host/bin/vm-exec
index 3b31452a..15d36c2a 100755
--- a/applets/compiler_vm/host/bin/vm-exec
+++ b/applets/compiler_vm/host/bin/vm-exec
@@ -47,11 +47,6 @@ $args->{channel}   //= 'vm';
 $args->{lang}      //= 'c11';
 $args->{'vm-port'} //= $ENV{PBOT_VM_PORT} // SERIAL_PORT;
 
-# override vm-port with environment variable
-if ($ENV{PBOT_VM_PORT}) {
-    $args->{'vm-port'} = $ENV{PBOT_VM_PORT};
-}
-
 my $language = lc $args->{lang};
 
 eval {