diff --git a/ui/app/gl_macos.m b/ui/app/gl_macos.m
index 165188fe..3cadd0a9 100644
--- a/ui/app/gl_macos.m
+++ b/ui/app/gl_macos.m
@@ -67,6 +67,10 @@ CVDisplayLinkRef displayLink;
 - (BOOL)isFlipped {
 	return YES;
 }
+- (void)update {
+	[super update];
+	gio_onDraw((__bridge CFTypeRef)self);
+}
 - (void)drawRect:(NSRect)r {
 	gio_onDraw((__bridge CFTypeRef)self);
 }
diff --git a/ui/app/os_macos.go b/ui/app/os_macos.go
index 0aa4e2fd..49b86d87 100644
--- a/ui/app/os_macos.go
+++ b/ui/app/os_macos.go
@@ -170,8 +170,9 @@ func gio_onMouse(view C.CFTypeRef, cdir C.int, x, y, dx, dy C.CGFloat, ti C.doub
 //export gio_onDraw
 func gio_onDraw(view C.CFTypeRef) {
 	viewDo(view, func(views viewMap, view C.CFTypeRef) {
-		w := views[view]
-		w.draw(true)
+		if w, exists := views[view]; exists {
+			w.draw(true)
+		}
 	})
 }