diff --git a/packages/better-auth/src/plugins/passkey/client.ts b/packages/better-auth/src/plugins/passkey/client.ts
index ccc9a82488..31ef751fd4 100644
--- a/packages/better-auth/src/plugins/passkey/client.ts
+++ b/packages/better-auth/src/plugins/passkey/client.ts
@@ -65,6 +65,7 @@ export const getPasskeyActions = (
 			return {
 				data: null,
 				error: {
+					code: "AUTH_CANCELLED",
 					message: "auth cancelled",
 					status: 400,
 					statusText: "BAD_REQUEST",
@@ -140,6 +141,7 @@ export const getPasskeyActions = (
 					return {
 						data: null,
 						error: {
+							code: e.code,
 							message: "previously registered",
 							status: 400,
 							statusText: "BAD_REQUEST",
@@ -150,6 +152,7 @@ export const getPasskeyActions = (
 					return {
 						data: null,
 						error: {
+							code: e.code,
 							message: "registration cancelled",
 							status: 400,
 							statusText: "BAD_REQUEST",
@@ -159,6 +162,7 @@ export const getPasskeyActions = (
 				return {
 					data: null,
 					error: {
+						code: e.code,
 						message: e.message,
 						status: 400,
 						statusText: "BAD_REQUEST",
@@ -168,6 +172,7 @@ export const getPasskeyActions = (
 			return {
 				data: null,
 				error: {
+					code: "UNKNOWN_ERROR",
 					message: e instanceof Error ? e.message : "unknown error",
 					status: 500,
 					statusText: "INTERNAL_SERVER_ERROR",