diff --git a/s/build b/s/build
index 4ee259573..818cb0268 100755
--- a/s/build
+++ b/s/build
@@ -33,7 +33,7 @@ fi
 echo "build eressea"
 cd $ROOT/$BUILD
 BRANCH=$(git status -s -b | head -1 | cut -d\  -f 2 | sed 's/\..*//')
-if [ "$BRANCH"=="master" ] ; then
+if [ "$BRANCH" = "master" ] ; then
 VERSION=$(git describe --match 'v*.*.*' --tags | sed 's/^v//')
 cmake -DERESSEA_VERSION="$VERSION" ..
 else