diff --git a/bin/syncqt.pl b/bin/syncqt.pl
index 7793811c9f0..8226edfb76f 100755
--- a/bin/syncqt.pl
+++ b/bin/syncqt.pl
@@ -1092,7 +1092,7 @@ ($$)
 #                                   }
                                     my $class_header = "$class ";
                                     $pri_install_gfiles .= $class_header
-                                        unless ($shadow || $pri_install_gfiles =~ $class_header);
+                                        unless ($shadow || $pri_install_gfiles =~ m/\b$class_header/);
                                     $injection .= ":$class";
                                 }