diff --git a/src/Gui/CommandView.cpp b/src/Gui/CommandView.cpp
index 3fcbeaa812..42cfe5cb0b 100644
--- a/src/Gui/CommandView.cpp
+++ b/src/Gui/CommandView.cpp
@@ -910,7 +910,7 @@ void StdCmdSetAppearance::activated(int iMsg)
 
 bool StdCmdSetAppearance::isActive(void)
 {
-    return !Gui::Selection().empty();
+    return Gui::Selection().size() != 0;
 }
 
 //===========================================================================