diff --git a/contrib/modsecurity/Makefile b/contrib/modsecurity/Makefile
index 72956f9e9..7853397cd 100644
--- a/contrib/modsecurity/Makefile
+++ b/contrib/modsecurity/Makefile
@@ -26,7 +26,7 @@ LIBXML_INC := /usr/include/libxml2
 endif
 
 CFLAGS  = -g -Wall -pthread
-LDFLAGS = -lpthread  -levent -levent_pthreads -lcurl -lapr-1 -laprutil-1 -lxml2 -lpcre -lyajl
+LDFLAGS += -lpthread  -levent -levent_pthreads -lcurl -lapr-1 -laprutil-1 -lxml2 -lpcre -lyajl
 INCS += -I../../include -I../../ebtree -I$(MODSEC_INC) -I$(APACHE2_INC) -I$(APR_INC) -I$(LIBXML_INC)
 LIBS =
 
diff --git a/contrib/modsecurity/spoa.h b/contrib/modsecurity/spoa.h
index daee6d233..d618f9bbe 100644
--- a/contrib/modsecurity/spoa.h
+++ b/contrib/modsecurity/spoa.h
@@ -20,6 +20,8 @@
 #ifndef __SPOA_H__
 #define __SPOA_H__
 
+#include <sys/queue.h>
+
 #include <event2/util.h>
 #include <event2/event.h>
 #include <event2/event_struct.h>