diff --git a/src/gui_mac.c b/src/gui_mac.c
index b930852..dbdda8a 100644
--- a/src/gui_mac.c
+++ b/src/gui_mac.c
@@ -5674,7 +5674,8 @@
 /*
  * Get current mouse coordinates in text window.
  */
-void gui_mch_getmouse(int *x, int *y)
+    void
+gui_mch_getmouse(int *x, int *y)
 {
     Point where;