diff --git a/pcbnew/tools/pcb_selection_tool.cpp b/pcbnew/tools/pcb_selection_tool.cpp
index eafa0d9de2..f1e00b9d0e 100644
--- a/pcbnew/tools/pcb_selection_tool.cpp
+++ b/pcbnew/tools/pcb_selection_tool.cpp
@@ -329,7 +329,7 @@ int PCB_SELECTION_TOOL::Main( const TOOL_EVENT& aEvent )
         else if( evt->IsDblClick( BUT_MIDDLE ) )
         {
             // Middle double click?  Do zoom to fit or zoom to objects
-            if( m_exclusive_or ) // Is CTRL key down?
+            if( evt->Modifier( MD_CTRL ) ) // Is CTRL key down?
                 m_toolMgr->RunAction( ACTIONS::zoomFitObjects, true );
             else
                 m_toolMgr->RunAction( ACTIONS::zoomFitScreen, true );