diff --git a/build-source-tarball.sh b/build-source-tarball.sh
index b95885fe..e7c5404d 100755
--- a/build-source-tarball.sh
+++ b/build-source-tarball.sh
@@ -117,7 +117,7 @@ while [[ -h $fullTarballRoot ]]; do
   # symlink file was located
   [[ $fullTarballRoot != /* ]] && fullTarballRoot="$SCRIPT_ROOT/$fullTarballRoot"
 done
-export FULL_TARBALL_ROOT="$fullTarballRoot"
+export FULL_TARBALL_ROOT="$(readlink -f "$fullTarballRoot")"
 
 if [ -e "$TARBALL_ROOT" ]; then
     echo "info: '$TARBALL_ROOT' already exists"