diff --git a/packages/agent/src/agent/http/index.ts b/packages/agent/src/agent/http/index.ts
index 399a9a888..4a53c6d67 100644
--- a/packages/agent/src/agent/http/index.ts
+++ b/packages/agent/src/agent/http/index.ts
@@ -325,8 +325,8 @@ export class HttpAgent implements Agent {
       );
     }
     const response = await request();
-    const responseText = await response.clone().text();
     if (!response.ok) {
+      const responseText = await response.clone().text();
       const errorMessage =
         `Server returned an error:\n` +
         `  Code: ${response.status} (${response.statusText})\n` +