diff --git a/src/RelayRequest.ts b/src/RelayRequest.ts
index 70d79e1..cff22d8 100644
--- a/src/RelayRequest.ts
+++ b/src/RelayRequest.ts
@@ -108,7 +108,6 @@ export default class RelayRequest {
   }
 
   clone(): RelayRequest {
-    // $FlowFixMe
     const newRequest = Object.assign(Object.create(Object.getPrototypeOf(this)), this);
     newRequest.fetchOpts = { ...this.fetchOpts
     };
@@ -117,4 +116,4 @@ export default class RelayRequest {
     return (newRequest as any);
   }
 
-}
\ No newline at end of file
+}
diff --git a/src/RelayRequestBatch.ts b/src/RelayRequestBatch.ts
index e85e6c6..bd518f0 100644
--- a/src/RelayRequestBatch.ts
+++ b/src/RelayRequestBatch.ts
@@ -55,7 +55,6 @@ export default class RelayRequestBatch {
   }
 
   clone(): RelayRequestBatch {
-    // $FlowFixMe
     const newRequest = Object.assign(Object.create(Object.getPrototypeOf(this)), this);
     newRequest.fetchOpts = { ...this.fetchOpts
     };
@@ -72,4 +71,4 @@ export default class RelayRequestBatch {
     return this.prepareBody();
   }
 
-}
\ No newline at end of file
+}
diff --git a/src/RelayResponse.ts b/src/RelayResponse.ts
index 968a84a..ff8a30b 100644
--- a/src/RelayResponse.ts
+++ b/src/RelayResponse.ts
@@ -52,7 +52,6 @@ export default class RelayResponse {
   }
 
   clone(): RelayResponse {
-    // $FlowFixMe
     return Object.assign(Object.create(Object.getPrototypeOf(this)), this);
   }
 
@@ -60,4 +59,4 @@ export default class RelayResponse {
     return [`Response:`, `   Url: ${this.url || ''}`, `   Status code: ${this.status || ''}`, `   Status text: ${this.statusText || ''}`, `   Response headers: ${JSON.stringify(this.headers) || ''}`, `   Response body: ${JSON.stringify(this.json) || ''}`].join('\n');
   }
 
-}
\ No newline at end of file
+}
diff --git a/src/fetchWithMiddleware.ts b/src/fetchWithMiddleware.ts
index b9f536a..1eafa08 100644
--- a/src/fetchWithMiddleware.ts
+++ b/src/fetchWithMiddleware.ts
@@ -32,7 +32,6 @@ const convertResponse: (next: MiddlewareRawNextFn) => MiddlewareNextFn = next =>
 export default function fetchWithMiddleware(req: RelayRequestAny, middlewares: Middleware[], // works with RelayResponse
 rawFetchMiddlewares: MiddlewareRaw[], // works with raw fetch response
 noThrow?: boolean): Promise<RelayResponse> {
-  // $FlowFixMe
   const wrappedFetch: MiddlewareNextFn = compose(...middlewares, convertResponse, ...rawFetchMiddlewares)((runFetch as any));
   return wrappedFetch(req).then(res => {
     if (!noThrow && (!res || res.errors || !res.data)) {
@@ -59,7 +58,6 @@ function compose(...funcs) {
   } else {
     const last = funcs[funcs.length - 1];
     const rest = funcs.slice(0, -1);
-    // $FlowFixMe - Suppress error about promise not being callable
     return (...args) => rest.reduceRight((composed, f) => f((composed as any)), last(...args));
   }
-}
\ No newline at end of file
+}
diff --git a/src/middlewares/auth.ts b/src/middlewares/auth.ts
index b8bfc7a..b4fa51a 100644
--- a/src/middlewares/auth.ts
+++ b/src/middlewares/auth.ts
@@ -28,7 +28,6 @@ export default function authMiddleware(opts?: AuthMiddlewareOpts): Middleware {
   let tokenRefreshInProgress = null;
   return next => async req => {
     try {
-      // $FlowFixMe
       const token = await (isFunction(tokenOrThunk) ? tokenOrThunk(req) : tokenOrThunk);
 
       if (!token && tokenRefreshPromise && !allowEmptyToken) {
@@ -77,4 +76,4 @@ export default function authMiddleware(opts?: AuthMiddlewareOpts): Middleware {
       throw e;
     }
   };
-}
\ No newline at end of file
+}
diff --git a/src/middlewares/batch.ts b/src/middlewares/batch.ts
index 4452521..22b5879 100644
--- a/src/middlewares/batch.ts
+++ b/src/middlewares/batch.ts
@@ -176,7 +176,6 @@ async function sendRequests(requestList: RequestWrapper[], next, opts) {
   } else if (requestList.length > 1) {
     // SEND AS BATCHED QUERY
     const batchRequest = new RelayRequestBatch(requestList.map(wrapper => wrapper.req));
-    // $FlowFixMe
     const url = await (isFunction(opts.batchUrl) ? opts.batchUrl(requestList) : opts.batchUrl);
     batchRequest.setFetchOption('url', url);
     const {
@@ -235,4 +234,4 @@ function createSingleResponse(batchResponse: RelayResponse, json: any): RelayRes
   const res = batchResponse.clone();
   res.processJsonData(data);
   return res;
-}
\ No newline at end of file
+}
diff --git a/src/middlewares/legacyBatch.ts b/src/middlewares/legacyBatch.ts
index 6cb8c0a..71d7526 100644
--- a/src/middlewares/legacyBatch.ts
+++ b/src/middlewares/legacyBatch.ts
@@ -161,7 +161,6 @@ async function sendRequests(requestMap: BatchRequestMap, next, opts) {
   } else if (ids.length > 1) {
     // SEND AS BATCHED QUERY
     const batchRequest = new RelayRequestBatch(ids.map(id => requestMap[id].req));
-    // $FlowFixMe
     const url = await (isFunction(opts.batchUrl) ? opts.batchUrl(requestMap) : opts.batchUrl);
     batchRequest.setFetchOption('url', url);
     const {
@@ -219,4 +218,4 @@ function createSingleResponse(batchResponse: RelayResponse, json: any): RelayRes
   const res = batchResponse.clone();
   res.processJsonData(data);
   return res;
-}
\ No newline at end of file
+}