diff --git a/src/transports/http/http_transport.ts b/src/transports/http/http_transport.ts
index 40bf6970..7d994200 100644
--- a/src/transports/http/http_transport.ts
+++ b/src/transports/http/http_transport.ts
@@ -123,7 +123,7 @@ export class HttpTransport implements IRequestTransport, HttpTransportOptions {
                         "Accept-Encoding": "gzip, deflate, br, zstd",
                         "Content-Type": "application/json",
                     },
-                    keepalive: true,
+                    keepalive: typeof window !== "undefined",
                     method: "POST",
                     signal: this.timeout ? AbortSignal.timeout(this.timeout) : undefined,
                 },