diff --git a/integration/grpc-web-no-streaming-observable/example.ts b/integration/grpc-web-no-streaming-observable/example.ts
index ea9642f05..1bfdb4221 100644
--- a/integration/grpc-web-no-streaming-observable/example.ts
+++ b/integration/grpc-web-no-streaming-observable/example.ts
@@ -335,10 +335,11 @@ export const DashStateUserSettingsDesc: UnaryMethodDefinitionish = {
   } as any,
   responseType: {
     deserializeBinary(data: Uint8Array) {
+      const value = DashUserSettingsState.decode(data);
       return {
-        ...DashUserSettingsState.decode(data),
+        ...value,
         toObject() {
-          return this;
+          return value;
         },
       };
     },
diff --git a/integration/grpc-web-no-streaming/example.ts b/integration/grpc-web-no-streaming/example.ts
index 834263b73..17bc4bab3 100644
--- a/integration/grpc-web-no-streaming/example.ts
+++ b/integration/grpc-web-no-streaming/example.ts
@@ -333,10 +333,11 @@ export const DashStateUserSettingsDesc: UnaryMethodDefinitionish = {
   } as any,
   responseType: {
     deserializeBinary(data: Uint8Array) {
+      const value = DashUserSettingsState.decode(data);
       return {
-        ...DashUserSettingsState.decode(data),
+        ...value,
         toObject() {
-          return this;
+          return value;
         },
       };
     },
@@ -400,7 +401,7 @@ export class GrpcWebImpl {
         debug: this.options.debug,
         onEnd: function (response) {
           if (response.status === grpc.Code.OK) {
-            resolve(response.message);
+            resolve(response.message!.toObject());
           } else {
             const err = new GrpcWebError(response.statusMessage, response.status, response.trailers);
             reject(err);
diff --git a/integration/grpc-web/example.ts b/integration/grpc-web/example.ts
index 75c03351e..ae32731ea 100644
--- a/integration/grpc-web/example.ts
+++ b/integration/grpc-web/example.ts
@@ -642,10 +642,11 @@ export const DashStateUserSettingsDesc: UnaryMethodDefinitionish = {
   } as any,
   responseType: {
     deserializeBinary(data: Uint8Array) {
+      const value = DashUserSettingsState.decode(data);
       return {
-        ...DashUserSettingsState.decode(data),
+        ...value,
         toObject() {
-          return this;
+          return value;
         },
       };
     },
@@ -664,10 +665,11 @@ export const DashStateActiveUserSettingsStreamDesc: UnaryMethodDefinitionish = {
   } as any,
   responseType: {
     deserializeBinary(data: Uint8Array) {
+      const value = DashUserSettingsState.decode(data);
       return {
-        ...DashUserSettingsState.decode(data),
+        ...value,
         toObject() {
-          return this;
+          return value;
         },
       };
     },
@@ -722,10 +724,11 @@ export const DashAPICredsCreateDesc: UnaryMethodDefinitionish = {
   } as any,
   responseType: {
     deserializeBinary(data: Uint8Array) {
+      const value = DashCred.decode(data);
       return {
-        ...DashCred.decode(data),
+        ...value,
         toObject() {
-          return this;
+          return value;
         },
       };
     },
@@ -744,10 +747,11 @@ export const DashAPICredsUpdateDesc: UnaryMethodDefinitionish = {
   } as any,
   responseType: {
     deserializeBinary(data: Uint8Array) {
+      const value = DashCred.decode(data);
       return {
-        ...DashCred.decode(data),
+        ...value,
         toObject() {
-          return this;
+          return value;
         },
       };
     },
@@ -766,10 +770,11 @@ export const DashAPICredsDeleteDesc: UnaryMethodDefinitionish = {
   } as any,
   responseType: {
     deserializeBinary(data: Uint8Array) {
+      const value = DashCred.decode(data);
       return {
-        ...DashCred.decode(data),
+        ...value,
         toObject() {
-          return this;
+          return value;
         },
       };
     },
@@ -838,7 +843,7 @@ export class GrpcWebImpl {
         debug: this.options.debug,
         onEnd: function (response) {
           if (response.status === grpc.Code.OK) {
-            resolve(response.message);
+            resolve(response.message!.toObject());
           } else {
             const err = new GrpcWebError(response.statusMessage, response.status, response.trailers);
             reject(err);
diff --git a/src/generate-grpc-web.ts b/src/generate-grpc-web.ts
index 4edfd29bc..dda41b3eb 100644
--- a/src/generate-grpc-web.ts
+++ b/src/generate-grpc-web.ts
@@ -125,7 +125,11 @@ export function generateGrpcMethodDesc(
   // we want/what grpc-web's runtime needs.
   const responseFn = code`{
     deserializeBinary(data: Uint8Array) {
-      return { ...${outputType}.decode(data), toObject() { return this; } };
+      const value = ${outputType}.decode(data);
+      return {
+        ...value,
+        toObject() { return value; },
+      };
     }
   }`;
 
@@ -246,7 +250,7 @@ function createPromiseUnaryMethod(ctx: Context): Code {
           debug: this.options.debug,
           onEnd: function (response) {
             if (response.status === grpc.Code.OK) {
-              resolve(response.message);
+              resolve(response.message!.toObject());
             } else {
               const err = new ${ctx.utils.GrpcWebError}(response.statusMessage, response.status, response.trailers);
               reject(err);