diff --git a/debugsubpkg.diff b/debugsubpkg.diff
index 1d825e5..006ae35 100644
--- a/debugsubpkg.diff
+++ b/debugsubpkg.diff
@@ -1,5 +1,5 @@
 --- ./build/files.c.orig	2017-02-16 09:52:49.292092380 +0000
-+++ ./build/files.c	2017-03-22 12:15:29.060287267 +0000
++++ ./build/files.c	2017-03-22 13:32:42.911865500 +0000
 @@ -21,6 +21,10 @@
  #include <rpm/rpmlog.h>
  #include <rpm/rpmbase64.h>
@@ -264,7 +264,7 @@
 +    int i;
 +
 +    snprintf(tmp, 1024, "%s%s", buildroot, "/usr/lib/debug/.dwz");
-+    if (lstat(tmp, &sbuf) == 0 && S_ISDIR(sbuf.st_mode))
++    if (lstat(tmp, &sbuf) != 0 || !S_ISDIR(sbuf.st_mode))
 +	return NULL;
 +    d = opendir(tmp);
 +    if (!d)