diff --git a/libraries/libmp4v2/libmp4v2.SlackBuild b/libraries/libmp4v2/libmp4v2.SlackBuild
index c9ad05c662..65e87529aa 100644
--- a/libraries/libmp4v2/libmp4v2.SlackBuild
+++ b/libraries/libmp4v2/libmp4v2.SlackBuild
@@ -73,6 +73,7 @@ CXXFLAGS="$SLKCFLAGS" \
   --libdir=/usr/lib${LIBDIRSUFFIX} \
   --sysconfdir=/etc \
   --localstatedir=/var \
+  --mandir=/usr/man \
   --build=$ARCH-slackware-linux
 
 make