diff --git a/libraries/libzen/libzen.SlackBuild b/libraries/libzen/libzen.SlackBuild
index ecdf468e8d..9645d5d7b2 100644
--- a/libraries/libzen/libzen.SlackBuild
+++ b/libraries/libzen/libzen.SlackBuild
@@ -24,7 +24,7 @@
 
 PRGNAM=libzen
 VERSION=${VERSION:-0.4.28}
-BUILD=${BUILD:-1}
+BUILD=${BUILD:-2}
 TAG=${TAG:-_SBo}
 
 if [ -z "$ARCH" ]; then
@@ -94,6 +94,9 @@ cd -
 find $PKG | xargs file | grep -e "executable" -e "shared object" | grep ELF \
   | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true
 
+# A header has been forgotten during the "make install"
+install -m 0644 -D Source/ZenLib/BitStream_Fast.h $PKG/usr/include/ZenLib/BitStream_Fast.h
+
 # Correct version number in .pc file
 sed -i "s/^Version: .*$/Version: $VERSION/" $PKG/usr/lib${LIBDIRSUFFIX}/pkgconfig/libzen.pc