diff --git a/common/draw_panel_gal.cpp b/common/draw_panel_gal.cpp
index c626dc9569..936a5bcf01 100644
--- a/common/draw_panel_gal.cpp
+++ b/common/draw_panel_gal.cpp
@@ -439,6 +439,8 @@ void EDA_DRAW_PANEL_GAL::StopDrawing()
     m_refreshTimer.Stop();
     m_drawingEnabled = false;
 
+    Disconnect( wxEVT_SHOW, wxShowEventHandler( EDA_DRAW_PANEL_GAL::onShowEvent ), nullptr, this );
+
     Disconnect( wxEVT_PAINT, wxPaintEventHandler( EDA_DRAW_PANEL_GAL::onPaint ), nullptr, this );
 
     Disconnect( wxEVT_IDLE, wxIdleEventHandler( EDA_DRAW_PANEL_GAL::onIdle ), nullptr, this );