1 files changed, 1 insertions, 1 deletions

diff --git a/src/xfns.c b/src/xfns.c
index ebb631716eb..906ff3d664f 100644
--- a/src/xfns.c
+++ b/src/xfns.c
@@ -2303,7 +2303,7 @@ hack_wm_protocols (f, widget)
 
     if ((XGetWindowProperty (dpy, w,
                              FRAME_X_DISPLAY_INFO (f)->Xatom_wm_protocols,
-                             0L, 100L, False, XA_ATOM,
+                             (long)0, (long)100, False, XA_ATOM,
                              &type, &format, &nitems, &bytes_after,
                              (unsigned char **) &atoms)
          == Success)