diff --git a/packages/amplify-category-function/src/provider-utils/awscloudformation/utils/environmentVariablesHelper.ts b/packages/amplify-category-function/src/provider-utils/awscloudformation/utils/environmentVariablesHelper.ts
index a9d5ffcf049..42c757db084 100644
--- a/packages/amplify-category-function/src/provider-utils/awscloudformation/utils/environmentVariablesHelper.ts
+++ b/packages/amplify-category-function/src/provider-utils/awscloudformation/utils/environmentVariablesHelper.ts
@@ -248,7 +248,7 @@ const deleteEnvironmentVariable = (resourceName: string, targetedKey: string): v
     return item.cloudFormationParameterName !== cameledKey && item.environmentVariableName !== targetedKey;
   });
   _.unset(newReferences, targetedKey);
-  _.unset(newParameters, targetedKey);
+  _.unset(newParameters, cameledKey);
   _.unset(newKeyValue, cameledKey);
 
   setStoredList(resourceName, newList);