diff --git a/src/cache.c b/src/cache.c
index a2d93758f..698395f15 100644
--- a/src/cache.c
+++ b/src/cache.c
@@ -646,6 +646,7 @@ enum act_return http_action_store_cache(struct act_rule *rule, struct proxy *px,
 	struct shared_context *shctx = shctx_ptr(cconf->c.cache);
 	struct cache_st *cache_ctx = NULL;
 	struct cache_entry *object, *old;
+	unsigned int key = *(unsigned int *)txn->cache_hash;
 
 	/* Don't cache if the response came from a cache */
 	if ((obj_type(s->target) == OBJ_TYPE_APPLET) &&
@@ -661,6 +662,10 @@ enum act_return http_action_store_cache(struct act_rule *rule, struct proxy *px,
 	if (txn->meth != HTTP_METH_GET)
 		goto out;
 
+	/* cache key was not computed */
+	if (!key)
+		goto out;
+
 	/* cache only 200 status code */
 	if (txn->status != 200)
 		goto out;
@@ -800,7 +805,8 @@ enum act_return http_action_store_cache(struct act_rule *rule, struct proxy *px,
 	if (cache_ctx) {
 		cache_ctx->first_block = first;
 
-		object->eb.key = (*(unsigned int *)&txn->cache_hash);
+		object->eb.key = key;
+
 		memcpy(object->hash, txn->cache_hash, sizeof(object->hash));
 		/* Insert the node later on caching success */
 
diff --git a/src/proto_http.c b/src/proto_http.c
index bf661ed44..25e0e3efd 100644
--- a/src/proto_http.c
+++ b/src/proto_http.c
@@ -7222,6 +7222,7 @@ void http_init_txn(struct stream *s)
 		      ? (TX_NOT_FIRST|TX_WAIT_NEXT_RQ)
 		      : 0);
 	txn->status = -1;
+	*(unsigned int *)txn->cache_hash = 0;
 
 	txn->cookie_first_date = 0;
 	txn->cookie_last_date = 0;