diff --git a/adapters/missena/missenatest/supplemental/error-imp-ext.json b/adapters/missena/missenatest/supplemental/error-imp-ext.json
index 3905efa6bab..d642ba91cd8 100644
--- a/adapters/missena/missenatest/supplemental/error-imp-ext.json
+++ b/adapters/missena/missenatest/supplemental/error-imp-ext.json
@@ -16,7 +16,7 @@
     },
     "expectedMakeRequestsErrors": [
         {
-            "value": "Error parsing bidderExt object",
+            "value": "Error parsing bidderExt object: expect { or n, but found \", input: \"error\"",
             "comparison": "literal"
         }
     ]