diff --git a/eeschema/sch_base_frame.cpp b/eeschema/sch_base_frame.cpp
index 011533cb48..6e0cba38dc 100644
--- a/eeschema/sch_base_frame.cpp
+++ b/eeschema/sch_base_frame.cpp
@@ -86,8 +86,10 @@ SCH_BASE_FRAME::SCH_BASE_FRAME( KIWAY* aKiway, wxWindow* aParent, FRAME_T aWindo
                                 const wxSize& aSize, long aStyle, const wxString& aFrameName ) :
         EDA_DRAW_FRAME( aKiway, aParent, aWindowType, aTitle, aPosition, aSize, aStyle,
                         aFrameName ),
-        m_base_frame_defaults( nullptr, "base_Frame_defaults" ),
-        m_spaceMouse( nullptr )
+        m_base_frame_defaults( nullptr, "base_Frame_defaults" )
+#if defined( KICAD_USE_3DCONNEXION )
+        ,m_spaceMouse( nullptr )
+#endif
 {
     createCanvas();