diff --git a/packages/better-auth/src/utils/get-request-ip.ts b/packages/better-auth/src/utils/get-request-ip.ts
index ef41f4cd2c..1a69ed64b0 100644
--- a/packages/better-auth/src/utils/get-request-ip.ts
+++ b/packages/better-auth/src/utils/get-request-ip.ts
@@ -26,7 +26,7 @@ export function getIp(
 	];
 	const headers = "headers" in req ? req.headers : req;
 	for (const key of keys) {
-		const value = headers.get(key);
+		const value = "get" in headers ? headers.get(key): headers[key];
 		if (typeof value === "string") {
 			const ip = value.split(",")[0].trim();
 			if (ip) return ip;