diff --git a/libraries/slv2/slv2.SlackBuild b/libraries/slv2/slv2.SlackBuild
index 9a84508c5e..6807ffb551 100644
--- a/libraries/slv2/slv2.SlackBuild
+++ b/libraries/slv2/slv2.SlackBuild
@@ -23,7 +23,7 @@
 # ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 PRGNAM=slv2
-VERSION=0.6.6
+VERSION=${VERSION:-0.6.6}
 BUILD=${BUILD:-2}
 TAG=${TAG:-_SBo}