diff --git a/scripts/script-upgrade.py b/scripts/script-upgrade.py
index f489162b2..54a0f98ad 100755
--- a/scripts/script-upgrade.py
+++ b/scripts/script-upgrade.py
@@ -55,14 +55,15 @@ if __name__ == '__main__':
     except ImportError, e:
         sys.stderr.write('Invalid script file: %s\n' % e)
         sys.exit(-1)
-    template.replace('%%nick%%', repr(script.defaultNick))
-    template.replace('%%user%%', repr(script.defaultUser))
-    template.replace('%%ident%%', repr(script.defaultIdent))
-    template.replace('%%server%%', repr(script.defaultServer))
-    template.replace('%%password%%', repr(script.defaultPassword))
-    template.replace('%%onStart%%', repr(conf.commandsOnStart))
-    template.replace('%%afterConnect%%', repr(script.afterConnect))
-    template.replace('%%configVariables%%', repr(script.configVariables))
+    template = template.replace('%%nick%%', repr(script.defaultNick))
+    template = template.replace('%%user%%', repr(script.defaultUser))
+    template = template.replace('%%ident%%', repr(script.defaultIdent))
+    template = template.replace('%%server%%', repr(script.defaultServer))
+    template = template.replace('%%password%%', repr(script.defaultPassword))
+    template = template.replace('%%onStart%%', repr(conf.commandsOnStart))
+    template = template.replace('%%afterConnect%%', repr(script.afterConnect))
+    template = template.replace('%%configVariables%%',
+                                repr(script.configVariables))
     os.rename(sys.argv[1], sys.argv[1] + '.bak')
     fd = file(sys.argv[1], 'w')
     fd.write(template)