diff --git a/scripts/get-version.sh b/scripts/get-version.sh
index 5e6d65e..94c3f0a 100755
--- a/scripts/get-version.sh
+++ b/scripts/get-version.sh
@@ -6,7 +6,7 @@ VERSION=
 if [ -s "$ROOT/../version.txt" ]; then
     VERSION=$(cat "$ROOT/../version.txt" | tr -d '[:space:]')
 fi
-if [ -z $VERSION ] && [ -d "$ROOT/../.git" ]; then
+if [ -z "$VERSION" ] && [ -d "$ROOT/../.git" ]; then
     TAG=$(git tag --points-at HEAD | sed 's/v//')
     if [ "$1" == "--tar" ]; then
         VERSION=$(git describe --dirty --tags --always | sed 's/debian\///g')
@@ -17,7 +17,7 @@ if [ -z $VERSION ] && [ -d "$ROOT/../.git" ]; then
     fi
 fi
 
-if [ -z $VERSION ]; then
+if [ -z "$VERSION" ]; then
     VERSION=unknown
 fi