diff --git a/gfx/drivers/metal.m b/gfx/drivers/metal.m
index e5434e52de..dc7b933a01 100644
--- a/gfx/drivers/metal.m
+++ b/gfx/drivers/metal.m
@@ -174,6 +174,10 @@
 
       [apple_platform setVideoMode:mode];
 
+#ifdef HAVE_COCOATOUCH
+      [self mtkView:view drawableSizeWillChange:CGSizeMake(mode.width, mode.height)];
+#endif
+
       *input         = NULL;
       *inputData     = NULL;
       /* graphics display driver */