(Fx_wm_set_size_hint): Check if the frame is an X frame.

1 files changed, 2 insertions, 1 deletions

diff --git a/src/xfns.c b/src/xfns.c
index 166cca63f2b..5b4d40100c2 100644
--- a/src/xfns.c
+++ b/src/xfns.c
@@ -3112,7 +3112,8 @@ If FRAME is nil, use the selected frame.  */)
     frame = selected_frame;
   f = XFRAME (frame);
   BLOCK_INPUT;
-  x_wm_set_size_hint (f, 0, 0);
+  if (FRAME_X_P (f))
+    x_wm_set_size_hint (f, 0, 0);
   UNBLOCK_INPUT;
   return Qnil;
 }