diff --git a/slang/ChangeLog b/slang/ChangeLog
index 386231712..d846156a8 100644
--- a/slang/ChangeLog
+++ b/slang/ChangeLog
@@ -1,3 +1,10 @@
+2004-09-24  Roland Illig  <roland.illig@gmx.de>
+
+	* slsignal.c (SLsystem): Replaced NULL with (char *) NULL in
+	call to execl.
+
+	From patches from the OpenBSD ports collection.
+
 2004-09-04  Pavel S. Shirshov  <pavelsh@mail.ru>
 
 	* sltermin.c (): Avoid strncpy, home_ti is 1K long and 
diff --git a/slang/slsignal.c b/slang/slsignal.c
index b46d144c0..bde1f7300 100644
--- a/slang/slsignal.c
+++ b/slang/slsignal.c
@@ -227,7 +227,7 @@ int SLsystem (char *cmd)
 	(void) sigprocmask (SIG_SETMASK, &save_mask, NULL);
 # endif
 
-	execl ("/bin/sh", "sh", "-c", cmd, NULL);
+	execl ("/bin/sh", "sh", "-c", cmd, (char *) NULL);
 	_exit (127);
      }
    else