diff --git a/WPrefs.app/main.c b/WPrefs.app/main.c
index d6b3946f..08dcb58a 100644
--- a/WPrefs.app/main.c
+++ b/WPrefs.app/main.c
@@ -45,6 +45,9 @@ static int DeadChildrenCount = 0;
 
 static void wAbort(Bool foo)
 {
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) foo;
+
 	exit(1);
 }