diff --git a/admin/mac/build-release-osx.sh b/admin/mac/build-release-osx.sh
index 7b6a93634..5bd3ffcff 100755
--- a/admin/mac/build-release-osx.sh
+++ b/admin/mac/build-release-osx.sh
@@ -18,7 +18,7 @@ function die {
 }
 ################################################################################
 
-if [ -z $2 ]
+if [ -z "$2" ]
 then
     echo This script expects the version number and cert-signer as parameters, e.g. "1.0.0 John Doe"
     exit 1