diff --git a/gitlab/functions.sh b/gitlab/functions.sh
index 6eaa8d82a95f392248a59eb42b541344f2129cbc..101f82d0ec496e51870bd9e7eecdd4cfd3e6ecec 100644
--- a/gitlab/functions.sh
+++ b/gitlab/functions.sh
@@ -250,7 +250,7 @@ if [ -z "${DOCSERVER}" ]; then
   export_env DOCSERVER
 fi
 
-if [ -z "{PREFIX}" ]; then
+if [ -z "${PREFIX}" ]; then
   PREFIX=${CI_PROJECT_DIR}/build-prefix
   # In case we're setting-up the prefix, erase it if it exists
   if [ -d "${PREFIX}" ]; then