diff --git a/sysutils/tmux/Makefile b/sysutils/tmux/Makefile
index a9f3de19f5f8..21b5bf3ac4c4 100644
--- a/sysutils/tmux/Makefile
+++ b/sysutils/tmux/Makefile
@@ -16,6 +16,7 @@ COMMENT=	A Terminal Multiplexer
 LICENSE=	BSD
 
 GNU_CONFIGURE=	yes
+USE_PKGCONFIG=	build
 
 MAN1=		tmux.1