diff --git a/www/libevhtp/Makefile b/www/libevhtp/Makefile
index 21ed6901e71e..261061850e72 100644
--- a/www/libevhtp/Makefile
+++ b/www/libevhtp/Makefile
@@ -2,7 +2,7 @@
 
 PORTNAME=	libevhtp
 PORTVERSION=	1.2.16
-PORTREVISION=	3
+PORTREVISION=	4
 CATEGORIES=	www
 
 MAINTAINER=	ultima@FreeBSD.org
@@ -19,7 +19,8 @@ USE_GITHUB=	yes
 GH_ACCOUNT=	criticalstack
 
 CMAKE_ARGS=	-DCMAKE_INCLUDE_PATH:PATH=include/event2 \
-		-DCMAKE_LIBRARY_PATH:PATH=lib/event2
+		-DCMAKE_LIBRARY_PATH:PATH=lib/event2 \
+		-DEVHTP_HAS_C99:BOOL=FALSE
 
 PLIST_SUB=	PORTVERSION=${PORTVERSION}