diff --git a/pub_login.sh b/pub_login.sh
index 37ef32e..968b5e5 100644
--- a/pub_login.sh
+++ b/pub_login.sh
@@ -3,7 +3,7 @@
 
 # Checking whether the secrets are available as environment
 # variables or not.
-if [ -z "${PUB_ACCESS_TOKEN" ]; then
+if [ -z "${PUB_ACCESS_TOKEN}" ]; then
   echo "Missing PUB_ACCESS_TOKEN environment variable"
   exit 1
 fi