diff --git a/meta-phosphor/classes/image_types_phosphor.bbclass b/meta-phosphor/classes/image_types_phosphor.bbclass
index 717c453..63de40e 100644
--- a/meta-phosphor/classes/image_types_phosphor.bbclass
+++ b/meta-phosphor/classes/image_types_phosphor.bbclass
@@ -356,7 +356,7 @@
 make_signatures() {
     signing_key="${SIGNING_KEY}"
 
-    if [ "${INSECURE_KEY}" == "True" ] && [ -n "${SIGNING_PUBLIC_KEY}" ]; then
+    if [ "${INSECURE_KEY}" = "True" ] && [ -n "${SIGNING_PUBLIC_KEY}" ]; then
         echo "Using SIGNING_PUBLIC_KEY"
         signing_key=""
     fi