diff --git a/acprep b/acprep
index 42361a4e..c3c6beb2 100755
--- a/acprep
+++ b/acprep
@@ -16,7 +16,7 @@ if [ -x "$cmd" ]; then
     export LIBTOOLIZE="$cmd"
 fi
 
-COMMIT=$(git describe --all --long | sed 's/heads\///')
+COMMIT=$(git describe --all | sed 's/heads\///')
 
 echo "m4_define([VERSION_NUMBER], [$COMMIT])" > version.m4