diff --git a/get_version.sh b/get_version.sh
index 69b6815..2143381 100755
--- a/get_version.sh
+++ b/get_version.sh
@@ -33,10 +33,11 @@ then
     fi
     VERSION=$(git describe --exact-match 2>/dev/null || echo "$MAJOR-git$(git show -s --pretty=format:%ci | cut -d ' ' -f 1 | tr -d '-').$(git show -s --pretty=format:%h)")$DIRTY
 else
-    VERSION=$( (head -n 1 ${2}ChangeLog || head -n 1 ../ChangeLog) | cut -d ' ' -f 2)
+    SCRIPT_DIR=$(dirname "$0")
+    VERSION=$(head -n 1 "${SCRIPT_DIR}/ChangeLog" | cut -d ' ' -f 2)
     if [ "$VERSION" = "master" ]
     then
-        VERSION=$VERSION-$( (head -n 1 ${2}ChangeLog || head -n 1 ../ChangeLog) | cut -d ' ' -f 1)
+        VERSION=$VERSION-$(head -n 1 "${SCRIPT_DIR}/ChangeLog" | cut -d ' ' -f 1)
     fi
 fi