diff --git a/audio/opus/Makefile b/audio/opus/Makefile
index 63e44952bb27..bf667c7112c9 100644
--- a/audio/opus/Makefile
+++ b/audio/opus/Makefile
@@ -28,4 +28,4 @@ regression-test: build
 CONFIGURE_ARGS+=--enable-fixed-point
 .endif
 
-.include <bsd.port.mk>
+.include <bsd.port.post.mk>