diff --git a/validator/manifest.json b/validator/manifest.json
index aefff8ef..dd3b3f9a 100644
--- a/validator/manifest.json
+++ b/validator/manifest.json
@@ -4101,7 +4101,7 @@
               "severity": "error",
               "code": "invalid",
               "details": {
-                "text": "Not a valid time ({0})"
+                "text": "Not a valid time (null)"
               },
               "diagnostics": "[88,34]",
               "expression": [
@@ -4112,7 +4112,7 @@
               "severity": "error",
               "code": "invalid",
               "details": {
-                "text": "Not a valid time ({0})"
+                "text": "Not a valid time (null)"
               },
               "diagnostics": "[92,34]",
               "expression": [