1 files changed, 1 insertions, 1 deletions
diff --git a/config.c b/config.c
index 2634457f6..ffe010423 100644
--- a/config.c
+++ b/config.c
@@ -1233,7 +1233,7 @@ static int matches(const char *key, const char *value)
 	return !strcmp(key, store.key) &&
 		(store.value_regex == NULL ||
 		 (store.do_not_match ^
-		  !regexec(store.value_regex, value, 0, NULL, 0)));
+		  (value && !regexec(store.value_regex, value, 0, NULL, 0))));
 }
 
 static int store_aux(const char *key, const char *value, void *cb)