diff --git a/libraries/libixp/libixp.SlackBuild b/libraries/libixp/libixp.SlackBuild
index 1b7d979b9f..0ebd57e1dc 100644
--- a/libraries/libixp/libixp.SlackBuild
+++ b/libraries/libixp/libixp.SlackBuild
@@ -22,7 +22,7 @@
 # SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 PRGNAM=libixp
-VERSION=0.5
+VERSION=${VERSION:-0.5}
 BUILD=${BUILD:-1}
 TAG=${TAG:-_SBo}