diff --git a/src/Makefile.am b/src/Makefile.am
index dfa9fcfa..5acf45c4 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -76,7 +76,7 @@ mod_cml_la_LIBADD = $(MEMCACHE_LIB) $(common_libadd) $(LUA_LIB)
 lib_LTLIBRARIES += mod_trigger_b4_dl.la
 mod_trigger_b4_dl_la_SOURCES = mod_trigger_b4_dl.c
 mod_trigger_b4_dl_la_LDFLAGS = -module -export-dynamic -avoid-version -no-undefined
-mod_trigger_b4_dl_la_LIBADD = $(GDBM_LIB) $(MEMCACHE_LIB) $(common_libadd)
+mod_trigger_b4_dl_la_LIBADD = $(GDBM_LIB) $(MEMCACHE_LIB) $(PCRE_LIB) $(common_libadd)
 
 lib_LTLIBRARIES += mod_mysql_vhost.la
 mod_mysql_vhost_la_SOURCES = mod_mysql_vhost.c