diff --git a/src/proxy.c b/src/proxy.c
index 14e37eb..d274dfe 100644
--- a/src/proxy.c
+++ b/src/proxy.c
@@ -813,7 +813,7 @@
 	 * a struct hdr_idx for it if we did not have one.
 	 */
 	if (unlikely(!s->txn.hdr_idx.v && (be->acl_requires & ACL_USE_L7_ANY))) {
-		if ((s->txn.hdr_idx.v = pool_alloc2(s->fe->hdr_idx_pool)) == NULL)
+		if ((s->txn.hdr_idx.v = pool_alloc2(pool2_hdr_idx)) == NULL)
 			return 0; /* not enough memory */
 
 		/* and now initialize the HTTP transaction state */