diff --git a/src/drivers/Cocoa/Fl_Cocoa_Gl_Window_Driver.mm b/src/drivers/Cocoa/Fl_Cocoa_Gl_Window_Driver.mm
index 708137d4b..41180641a 100644
--- a/src/drivers/Cocoa/Fl_Cocoa_Gl_Window_Driver.mm
+++ b/src/drivers/Cocoa/Fl_Cocoa_Gl_Window_Driver.mm
@@ -294,6 +294,7 @@ void Fl_Cocoa_Gl_Window_Driver::make_current_before() {
     d->changed_resolution(false);
     pWindow->invalidate();
     [(NSOpenGLContext*)pWindow->context() update];
+    if (gl1ctxt) [gl1ctxt update];
   }
 }