diff --git a/src/relayMutation.js b/src/relayMutation.js
index 958ac3f..7875c76 100644
--- a/src/relayMutation.js
+++ b/src/relayMutation.js
@@ -27,10 +27,7 @@ export default function mutation(
 
   return fetchWithMiddleware(req)
     .then(({ data }) => relayRequest.resolve({ response: data }))
-    .catch(err => {
-      relayRequest.reject(err);
-      throw err;
-    });
+    .catch(err => relayRequest.reject(err));
 }
 
 function hasFiles(relayRequest: RelayClassicRequest): boolean {
diff --git a/src/relayQueries.js b/src/relayQueries.js
index d2f9993..22ead10 100644
--- a/src/relayQueries.js
+++ b/src/relayQueries.js
@@ -31,10 +31,7 @@ export default function queries(
 
       return fetchWithMiddleware(req)
         .then(({ data }) => relayRequest.resolve({ response: data }))
-        .catch(err => {
-          relayRequest.reject(err);
-          throw err;
-        });
+        .catch(err => relayRequest.reject(err));
     })
   );
 }