diff --git a/src/resumable-upload.ts b/src/resumable-upload.ts
index 5a1f71ccc..b12c27f09 100644
--- a/src/resumable-upload.ts
+++ b/src/resumable-upload.ts
@@ -1231,7 +1231,9 @@ export class Upload extends Writable {
 
         if (retryDelay <= 0) {
           this.destroy(
-            new Error(`Retry total time limit exceeded - ${resp.data}`)
+            new Error(
+              `Retry total time limit exceeded - ${JSON.stringify(resp.data)}`
+            )
           );
           return;
         }
@@ -1252,7 +1254,9 @@ export class Upload extends Writable {
       }
       this.numRetries++;
     } else {
-      this.destroy(new Error('Retry limit exceeded - ' + resp.data));
+      this.destroy(
+        new Error(`Retry limit exceeded - ${JSON.stringify(resp.data)}`)
+      );
     }
   }
 
diff --git a/test/resumable-upload.ts b/test/resumable-upload.ts
index da3ca97bc..0080767e0 100644
--- a/test/resumable-upload.ts
+++ b/test/resumable-upload.ts
@@ -1874,7 +1874,7 @@ describe('resumable-upload', () => {
         up.destroy = (err: Error) => {
           assert.strictEqual(
             err.message,
-            `Retry limit exceeded - ${RESP.data}`
+            `Retry limit exceeded - ${JSON.stringify(RESP.data)}`
           );
           done();
         };
@@ -1915,7 +1915,7 @@ describe('resumable-upload', () => {
             assert.strictEqual(up.numRetries, 3);
             assert.strictEqual(
               err.message,
-              `Retry limit exceeded - ${RESP.data}`
+              `Retry limit exceeded - ${JSON.stringify(RESP.data)}`
             );
             done();
           });