diff --git a/lib/tempest b/lib/tempest
index bc0b18d9f4..9f41608187 100644
--- a/lib/tempest
+++ b/lib/tempest
@@ -266,7 +266,7 @@ function configure_tempest() {
     iniset $TEMPEST_CONF boto ssh_user ${DEFAULT_INSTANCE_USER:-cirros}
 
     # Orchestration test image
-    if [ $HEAT_CREATE_TEST_IMAGE == "True" ]; then
+    if [[ "$HEAT_CREATE_TEST_IMAGE" = "True" ]]; then
         disk_image_create /usr/share/tripleo-image-elements "vm fedora heat-cfntools" "i386" "fedora-vm-heat-cfntools-tempest"
         iniset $TEMPEST_CONF orchestration image_ref "fedora-vm-heat-cfntools-tempest"
     fi