diff --git a/src/__snapshots__/getBridgeUiConfig.unit.test.ts.snap b/src/__snapshots__/getBridgeUiConfig.unit.test.ts.snap
index 0df85c27b..aec93c72e 100644
--- a/src/__snapshots__/getBridgeUiConfig.unit.test.ts.snap
+++ b/src/__snapshots__/getBridgeUiConfig.unit.test.ts.snap
@@ -22,7 +22,7 @@ exports[`successfully generates bridge UI config from deployment transaction 1`]
     "l2Contracts": {
       "customGateway": "0xB59dD42cC815FdA12B8b40A410164D49Fd2E96Fc",
       "multicall": "0x73465577E9FD7Cd585E4270F23A9eBa99B92b6eD",
-      "proxyAdmin": "0x7618B3d4d8C71132BfCd33fDD98424a060F37470",
+      "proxyAdmin": "0xA811e68582E043680D915a38Cc11005Ef1F0A509",
       "router": "0xFb4ea97964A04D0Dd367Bd69ffF03e66dfDB55b8",
       "standardGateway": "0x6b6f76e5D2A2C8Ee2cc2964ccaAFf570835B003a",
       "weth": "0x7b79995e5f793A07Bc00c21412e50Ecae098E7f9",
diff --git a/src/getBridgeUiConfig.ts b/src/getBridgeUiConfig.ts
index a23a61df3..a7b18ff51 100644
--- a/src/getBridgeUiConfig.ts
+++ b/src/getBridgeUiConfig.ts
@@ -111,7 +111,7 @@ export async function getBridgeUiConfig<TChain extends Chain>({
       l2Contracts: {
         customGateway: tokenBridgeContracts.parentChainContracts.customGateway,
         multicall: tokenBridgeContracts.parentChainContracts.multicall,
-        proxyAdmin: tokenBridgeContracts.orbitChainContracts.proxyAdmin,
+        proxyAdmin: coreContracts.adminProxy,
         router: tokenBridgeContracts.parentChainContracts.router,
         standardGateway: tokenBridgeContracts.parentChainContracts.standardGateway,
         weth: tokenBridgeContracts.parentChainContracts.weth,
diff --git a/src/getBridgeUiConfig.unit.test.ts b/src/getBridgeUiConfig.unit.test.ts
index 0faf78454..c413ceb06 100644
--- a/src/getBridgeUiConfig.unit.test.ts
+++ b/src/getBridgeUiConfig.unit.test.ts
@@ -20,4 +20,18 @@ it('successfully generates bridge UI config from deployment transaction', async
   });
 
   expect(bridgeUiConfig).toMatchSnapshot();
+
+  // l2Contracts describes the PARENT chain; l3Contracts describes the orbit chain.
+  // A regression here means l2Contracts.proxyAdmin was populated from the orbit
+  // chain's proxyAdmin instead of the parent chain's (see coreContracts.adminProxy).
+  expect(bridgeUiConfig.tokenBridgeContracts.l2Contracts.proxyAdmin).not.toBe(
+    bridgeUiConfig.tokenBridgeContracts.l3Contracts.proxyAdmin,
+  );
+
+  // Confirm the parent-chain proxyAdmin is an address with real bytecode ON THE PARENT CHAIN.
+  const parentChainCode = await sepoliaClient.getBytecode({
+    address: bridgeUiConfig.tokenBridgeContracts.l2Contracts.proxyAdmin as `0x${string}`,
+  });
+  expect(parentChainCode).toBeDefined();
+  expect(parentChainCode!.length).toBeGreaterThan(2); // more than just "0x"
 });