diff --git a/.changeset/pink-squids-sleep.md b/.changeset/pink-squids-sleep.md
new file mode 100644
index 0000000000000..e0b088e8f1070
--- /dev/null
+++ b/.changeset/pink-squids-sleep.md
@@ -0,0 +1,5 @@
+---
+'@graphql-mesh/transform-naming-convention': patch
+---
+
+Fix
diff --git a/examples/fastify/.meshrc.yml b/examples/fastify/.meshrc.yml
index 4b528585e71c1..1ed454c1058f4 100644
--- a/examples/fastify/.meshrc.yml
+++ b/examples/fastify/.meshrc.yml
@@ -1,3 +1,4 @@
+merger: bare
 sources:
   - name: Swapi
     handler:
@@ -5,3 +6,7 @@ sources:
         source: ./swagger/pets.json
         endpoint: >-
           http://localhost:4001
+    transforms:
+        - namingConvention:
+            mode: bare
+            fieldNames: camelCase
diff --git a/examples/fastify/tests/__snapshots__/fastify.spec.ts.snap b/examples/fastify/tests/__snapshots__/fastify.spec.ts.snap
new file mode 100644
index 0000000000000..d68a960d54641
--- /dev/null
+++ b/examples/fastify/tests/__snapshots__/fastify.spec.ts.snap
@@ -0,0 +1,32 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`fastify should introspect correctly: schema 1`] = `
+"directive @globalOptions(sourceName: String, endpoint: String, operationHeaders: ObjMap, queryStringOptions: ObjMap, queryParams: ObjMap) on OBJECT
+
+directive @httpOperation(path: String, operationSpecificHeaders: ObjMap, httpMethod: HTTPMethod, isBinary: Boolean, requestBaseBody: ObjMap, queryParamArgMap: ObjMap, queryStringOptionsByParam: ObjMap) on FIELD_DEFINITION
+
+type Query {
+  petByPetId(
+    """ID of pet to return"""
+    petId: String!
+  ): Pet
+}
+
+type Pet {
+  name: String!
+}
+
+scalar ObjMap
+
+enum HTTPMethod {
+  GET
+  HEAD
+  POST
+  PUT
+  DELETE
+  CONNECT
+  OPTIONS
+  TRACE
+  PATCH
+}"
+`;
diff --git a/examples/fastify/tests/fastify.spec.ts b/examples/fastify/tests/fastify.spec.ts
index e26a787382026..51dc6b63ac602 100644
--- a/examples/fastify/tests/fastify.spec.ts
+++ b/examples/fastify/tests/fastify.spec.ts
@@ -1,3 +1,4 @@
+import { buildClientSchema, getIntrospectionQuery, printSchema } from 'graphql';
 import { fetch } from '@whatwg-node/fetch';
 import { app } from '../src/app';
 import { upstream } from '../src/upstream';
@@ -17,6 +18,21 @@ describe('fastify', () => {
     await upstream.close();
   });
 
+  it('should introspect correctly', async () => {
+    const response = await fetch('http://localhost:4000/graphql', {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+      },
+      body: JSON.stringify({
+        query: getIntrospectionQuery(),
+      }),
+    });
+    const json = await response.json();
+    const schema = buildClientSchema(json.data);
+    expect(printSchema(schema)).toMatchSnapshot('schema');
+  });
+
   it('should work', async () => {
     const response = await fetch('http://localhost:4000/graphql', {
       method: 'POST',
@@ -26,7 +42,7 @@ describe('fastify', () => {
       body: JSON.stringify({
         query: /* GraphQL */ `
           {
-            pet_by_petId(petId: "pet200") {
+            petByPetId(petId: "pet200") {
               name
             }
           }
@@ -35,7 +51,10 @@ describe('fastify', () => {
     });
 
     const json = await response.json();
-    expect(json.data).toEqual({ pet_by_petId: { name: 'Bob' } });
+
+    expect(json).toEqual({
+      data: { petByPetId: { name: 'Bob' } },
+    });
   });
 
   it('should work too', async () => {
@@ -47,7 +66,7 @@ describe('fastify', () => {
       body: JSON.stringify({
         query: /* GraphQL */ `
           {
-            pet_by_petId(petId: "pet500") {
+            petByPetId(petId: "pet500") {
               name
             }
           }
@@ -58,11 +77,11 @@ describe('fastify', () => {
     const resJson = await response.json();
 
     expect(resJson).toEqual({
-      data: { pet_by_petId: null },
+      data: { petByPetId: null },
       errors: [
         {
           message: 'HTTP Error: 500, Could not invoke operation GET /pet/{args.petId}',
-          path: ['pet_by_petId'],
+          path: ['petByPetId'],
           extensions: {
             request: { url: 'http://localhost:4001/pet/pet500', method: 'GET' },
             responseJson: { error: 'Error' },
diff --git a/packages/handlers/openapi/src/index.ts b/packages/handlers/openapi/src/index.ts
index f1f0720404e88..ef301d95242fb 100644
--- a/packages/handlers/openapi/src/index.ts
+++ b/packages/handlers/openapi/src/index.ts
@@ -1,11 +1,4 @@
-import {
-  buildSchema,
-  execute,
-  ExecutionArgs,
-  GraphQLSchema,
-  OperationTypeNode,
-  subscribe,
-} from 'graphql';
+import { buildSchema, GraphQLSchema } from 'graphql';
 import { PredefinedProxyOptions, StoreProxy } from '@graphql-mesh/store';
 import { stringInterpolator } from '@graphql-mesh/string-interpolation';
 import {
@@ -20,7 +13,6 @@ import {
   YamlConfig,
 } from '@graphql-mesh/types';
 import { readFileOrUrl } from '@graphql-mesh/utils';
-import { getOperationASTFromRequest } from '@graphql-tools/utils';
 import { loadNonExecutableGraphQLSchemaFromOpenAPI, processDirectives } from '@omnigraph/openapi';
 
 export default class OpenAPIHandler implements MeshHandler {
@@ -107,33 +99,15 @@ export default class OpenAPIHandler implements MeshHandler {
     const nonExecutableSchema = await this.getNonExecutableSchema({
       interpolatedSource,
     });
-    const schemaWithDirectives$ = Promise.resolve().then(() => {
-      this.logger.info(`Processing annotations for the execution layer`);
-      return processDirectives({
-        ...this.config,
-        schema: nonExecutableSchema,
-        pubsub: this.pubsub,
-        logger: this.logger,
-        globalFetch: fetchFn,
-      });
+    const schema = processDirectives({
+      ...this.config,
+      schema: nonExecutableSchema,
+      pubsub: this.pubsub,
+      logger: this.logger,
+      globalFetch: fetchFn,
     });
     return {
-      schema: nonExecutableSchema,
-      executor: async executionRequest => {
-        const args: ExecutionArgs = {
-          schema: await schemaWithDirectives$,
-          document: executionRequest.document,
-          variableValues: executionRequest.variables,
-          operationName: executionRequest.operationName,
-          contextValue: executionRequest.context,
-          rootValue: executionRequest.rootValue,
-        };
-        const operationAST = getOperationASTFromRequest(executionRequest);
-        if (operationAST.operation === OperationTypeNode.SUBSCRIPTION) {
-          return subscribe(args) as any;
-        }
-        return execute(args) as any;
-      },
+      schema,
     };
   }
 }
diff --git a/packages/transforms/naming-convention/src/bareNamingConvention.ts b/packages/transforms/naming-convention/src/bareNamingConvention.ts
index a1fe83bf67496..5bf3362196d0a 100644
--- a/packages/transforms/naming-convention/src/bareNamingConvention.ts
+++ b/packages/transforms/naming-convention/src/bareNamingConvention.ts
@@ -273,7 +273,7 @@ function argsFromArgMap(argMap: ArgsMap, args: any) {
   Object.keys(args).forEach(newArgName => {
     if (typeof newArgName !== 'string') return;
 
-    const argMapVal = argMap[newArgName];
+    const argMapVal = argMap[newArgName] || newArgName;
     const originalArgName = typeof argMapVal === 'string' ? argMapVal : argMapVal.originalName;
     const val = args[newArgName];
     if (Array.isArray(val) && typeof argMapVal !== 'string') {
@@ -286,6 +286,5 @@ function argsFromArgMap(argMap: ArgsMap, args: any) {
       originalArgs[originalArgName] = val;
     }
   });
-
   return originalArgs;
 }