diff --git a/src/network/access/qnetworkaccesscache_p.h b/src/network/access/qnetworkaccesscache_p.h
index 3be7967ca1f..3ea0ac986f6 100644
--- a/src/network/access/qnetworkaccesscache_p.h
+++ b/src/network/access/qnetworkaccesscache_p.h
@@ -43,7 +43,7 @@ public:
         QByteArray key;
         bool expires;
         bool shareable;
-        qint64 expiryTimeoutSeconds;
+        qint64 expiryTimeoutSeconds = -1;
     public:
         CacheableObject();
         virtual ~CacheableObject();