diff --git a/packages/thirdweb/src/wallets/in-app/web/lib/get-url-token.test.tsx b/packages/thirdweb/src/wallets/in-app/web/lib/get-url-token.test.tsx
index 3209675cfb6..06243d24008 100644
--- a/packages/thirdweb/src/wallets/in-app/web/lib/get-url-token.test.tsx
+++ b/packages/thirdweb/src/wallets/in-app/web/lib/get-url-token.test.tsx
@@ -67,8 +67,8 @@ describe.runIf(global.window !== undefined)("getUrlToken", () => {
       walletId: "123",
     });
 
-    // Check if URL has been updated correctly
-    expect(window.location.search).toBe("?walletId=123&authCookie=myCookie");
+    // Check if URL has been updated correctly (should remove thirdweb params)
+    expect(window.location.search).toBe("");
   });
 
   it("should handle all parameters correctly", () => {
@@ -84,9 +84,52 @@ describe.runIf(global.window !== undefined)("getUrlToken", () => {
       walletId: "123",
     });
 
-    // Check if URL has been updated correctly
-    expect(window.location.search).toBe(
-      "?walletId=123&authResult=%7B%22token%22%3A%22xyz%22%7D&authProvider=provider1&authCookie=myCookie",
-    );
+    // Check if URL has been updated correctly (should remove all thirdweb params)
+    expect(window.location.search).toBe("");
+  });
+
+  it("should preserve custom parameters while removing thirdweb ones", () => {
+    window.location.search =
+      "?custom_param=value&walletId=123&another_custom=test&authCookie=myCookie&user_id=456";
+
+    const result = getUrlToken();
+
+    expect(result).toEqual({
+      authCookie: "myCookie",
+      authProvider: null,
+      authResult: undefined,
+      walletId: "123",
+    });
+
+    // Check if custom parameters are preserved while thirdweb ones are removed
+    expect(window.location.search).toBe("?custom_param=value&another_custom=test&user_id=456");
+  });
+
+  it("should preserve custom parameters with all thirdweb parameters", () => {
+    window.location.search =
+      "?utm_source=google&walletId=123&authResult=%7B%22token%22%3A%22xyz%22%7D&authProvider=provider1&authCookie=myCookie&ref=homepage";
+
+    const result = getUrlToken();
+
+    expect(result).toEqual({
+      authCookie: "myCookie",
+      authProvider: "provider1",
+      authResult: { token: "xyz" },
+      walletId: "123",
+    });
+
+    // Check if custom parameters (utm_source, ref) are preserved
+    expect(window.location.search).toBe("?utm_source=google&ref=homepage");
+  });
+
+  it("should handle case where only custom parameters exist", () => {
+    window.location.search = "?custom_param=value&another_param=test";
+
+    const result = getUrlToken();
+
+    expect(result).toEqual(undefined);
+
+    // URL should remain unchanged when no thirdweb params are present
+    expect(window.location.search).toBe("?custom_param=value&another_param=test");
   });
 });
diff --git a/packages/thirdweb/src/wallets/in-app/web/lib/get-url-token.ts b/packages/thirdweb/src/wallets/in-app/web/lib/get-url-token.ts
index bee4daa1f31..1deb7fe45b4 100644
--- a/packages/thirdweb/src/wallets/in-app/web/lib/get-url-token.ts
+++ b/packages/thirdweb/src/wallets/in-app/web/lib/get-url-token.ts
@@ -28,18 +28,25 @@ export function getUrlToken():
   if ((authCookie || authResultString) && walletId) {
     const authResult = (() => {
       if (authResultString) {
-        params.delete("authResult");
         return JSON.parse(decodeURIComponent(authResultString));
       }
     })();
-    params.delete("walletId");
-    params.delete("authProvider");
-    params.delete("authCookie");
-    window.history.pushState(
-      {},
-      "",
-      `${window.location.pathname}?${params.toString()}`,
-    );
+
+    // Only remove thirdweb-specific parameters, preserving custom ones
+    const thirdwebParams = ["authResult", "walletId", "authProvider", "authCookie"];
+    const updatedParams = new URLSearchParams(queryString);
+    
+    thirdwebParams.forEach(param => {
+      updatedParams.delete(param);
+    });
+
+    // Update the URL with only the custom parameters preserved
+    const newUrl = updatedParams.toString() 
+      ? `${window.location.pathname}?${updatedParams.toString()}`
+      : window.location.pathname;
+    
+    window.history.pushState({}, "", newUrl);
+    
     return { authCookie, authProvider, authResult, walletId };
   }
   return undefined;