diff --git a/src/haproxy.c b/src/haproxy.c
index 474179c..5822a8b 100644
--- a/src/haproxy.c
+++ b/src/haproxy.c
@@ -146,6 +146,7 @@
 		.maxrewrite = MAXREWRITE,
 		.chksize = BUFSIZE,
 		.reserved_bufs = RESERVED_BUFS,
+		.pattern_cache = DEFAULT_PAT_LRU_SIZE,
 #ifdef USE_OPENSSL
 		.sslcachesize = SSLCACHESIZE,
 		.ssl_default_dh_param = SSL_DEFAULT_DH_PARAM,