diff --git a/src/misc2.c b/src/misc2.c
index 2436f9f..8e01434 100644
--- a/src/misc2.c
+++ b/src/misc2.c
@@ -2953,6 +2953,7 @@
 
 	    for (i = 0; i < *argc; ++i)
 		VIM_CLEAR((*argv)[i]);
+	    (*argv)[0] = NULL;
 	    return FAIL;
 	}
 	(*argv)[*argc] = (char *)vim_strsave(s);