diff --git a/src/xfns.c b/src/xfns.c
index b94666d5548..d0d5d399dc4 100644
--- a/src/xfns.c
+++ b/src/xfns.c
@@ -4572,7 +4572,7 @@ On MS Windows, this just returns nil.  */)
     return Qnil;
 }
 
-#ifndef USE_GTK
+#if !defined USE_GTK || !defined HAVE_GTK3
 
 /* Store the geometry of the workarea on display DPYINFO into *RECT.
    Return false if and only if the workarea information cannot be