diff --git a/group.cpp b/group.cpp
index 9b8acb6f99..d85dafcd9e 100644
--- a/group.cpp
+++ b/group.cpp
@@ -213,6 +213,7 @@ bool Client::belongToSameApplication( const Client* c1, const Client* c2, bool a
         ; // "different" apps
     else if( c1->pid() == 0 || c2->pid() == 0 )
         ; // old apps that don't have _NET_WM_PID, consider them different
+    else
         same_app = true; // looks like it's the same app
     return same_app;
     }