diff --git a/kcmkwin/kwinrules/main.cpp b/kcmkwin/kwinrules/main.cpp
index 65922861e9..561bf53abc 100644
--- a/kcmkwin/kwinrules/main.cpp
+++ b/kcmkwin/kwinrules/main.cpp
@@ -143,6 +143,8 @@ static Rules* findRule( const QValueList< Rules* >& rules, Window wid )
         ret->types = 1 << type; // convert type to its mask
     ret->title = title; // set, but make unimportant
     ret->titlematch = Rules::UnimportantMatch;
+    ret->clientmachine = machine; // set, but make unimportant
+    ret->clientmachine = Rules::UnimportantMatch;
 //    ret->extrarole = extra; TODO
     ret->extrarolematch = Rules::UnimportantMatch;
     if( !role.isEmpty()