diff --git a/math/gsl/Makefile b/math/gsl/Makefile
index 2bbb9e3c5d9b..c576a88b5f58 100644
--- a/math/gsl/Makefile
+++ b/math/gsl/Makefile
@@ -20,6 +20,9 @@ MAINTAINER=	ports@FreeBSD.org
 GNU_CONFIGURE=	yes
 INSTALLS_SHLIB=	yes
 
+MAN1=		gsl-config.1
+MAN3=		gsl.3
+
 GSLREF=		gsl-ref.ps.gz
 
 post-install: