diff --git a/eeschema/dialogs/panel_setup_buses.cpp b/eeschema/dialogs/panel_setup_buses.cpp
index cb91044965..18606bf9c9 100644
--- a/eeschema/dialogs/panel_setup_buses.cpp
+++ b/eeschema/dialogs/panel_setup_buses.cpp
@@ -30,6 +30,7 @@ PANEL_SETUP_BUSES::PANEL_SETUP_BUSES( wxWindow* aWindow, SCH_EDIT_FRAME* aFrame
         PANEL_SETUP_BUSES_BASE( aWindow ),
         m_frame( aFrame ),
         m_lastAlias( 0 ),
+        m_membersGridDirty( false ),
         m_errorGrid( nullptr ),
         m_errorRow( -1 )
 {