1 files changed, 1 insertions, 1 deletions
diff --git a/x11perf.c b/x11perf.c
index 8825b71..8799f34 100644
--- a/x11perf.c
+++ b/x11perf.c
@@ -316,7 +316,7 @@ ReportTimes(double usecs, long long n, char *str, int average)
 ************************************************/
 
 static char *program_name;
-static void usage(void);
+static void usage(void) _X_NORETURN;
 
 /*
  * Get_Display_Name (argc, argv) Look for -display, -d, or host:dpy (obselete)