diff --git a/build-ci.sh b/build-ci.sh
index 5a89706ec..6ca08fbaf 100755
--- a/build-ci.sh
+++ b/build-ci.sh
@@ -1,13 +1,13 @@
 #!/bin/sh
 set -e -x
 
-team_repo=$GOPATH/src/github.bus.zalan.do/acid
-project_dir=$team_repo/postgres-operator
+team_repo="$GOPATH/src/github.bus.zalan.do/acid"
+project_dir="$team_repo/postgres-operator"
 
-mkdir -p $team_repo
+mkdir -p "$team_repo"
 
-ln -s $PWD $project_dir
-cd $project_dir
+ln -s "$PWD" "$project_dir"
+cd "$project_dir"
 
 glide install
 make clean docker push