diff --git a/packages/core/src/controllers/NetworkController.ts b/packages/core/src/controllers/NetworkController.ts
index 5d711d689c..1aa13df2e9 100644
--- a/packages/core/src/controllers/NetworkController.ts
+++ b/packages/core/src/controllers/NetworkController.ts
@@ -23,6 +23,7 @@ export interface NetworkControllerState {
   caipNetwork?: CaipNetwork
   requestedCaipNetworks?: CaipNetwork[]
   approvedCaipNetworkIds?: CaipNetworkId[]
+  allowUnsupportedChain?: boolean
 }
 
 type StateKey = keyof NetworkControllerState
@@ -56,7 +57,9 @@ export const NetworkController = {
   setCaipNetwork(caipNetwork: NetworkControllerState['caipNetwork']) {
     state.caipNetwork = caipNetwork
     PublicStateController.set({ selectedNetworkId: caipNetwork?.id })
-    this.checkIfSupportedNetwork()
+    if (!this.state.allowUnsupportedChain) {
+      this.checkIfSupportedNetwork()
+    }
   },
 
   setDefaultCaipNetwork(caipNetwork: NetworkControllerState['caipNetwork']) {
@@ -69,6 +72,10 @@ export const NetworkController = {
     state.requestedCaipNetworks = requestedNetworks
   },
 
+  setAllowUnsupportedChain(allowUnsupportedChain: NetworkControllerState['allowUnsupportedChain']) {
+    state.allowUnsupportedChain = allowUnsupportedChain
+  },
+
   getRequestedCaipNetworks() {
     const { approvedCaipNetworkIds, requestedCaipNetworks } = state
 
diff --git a/packages/scaffold/src/client.ts b/packages/scaffold/src/client.ts
index 502821f2d8..90862e2424 100644
--- a/packages/scaffold/src/client.ts
+++ b/packages/scaffold/src/client.ts
@@ -47,6 +47,7 @@ export interface LibraryOptions {
   enableAnalytics?: OptionsControllerState['enableAnalytics']
   metadata?: OptionsControllerState['metadata']
   enableOnramp?: OptionsControllerState['enableOnramp']
+  allowUnsupportedChain?: NetworkControllerState['allowUnsupportedChain']
   _sdkVersion: OptionsControllerState['sdkVersion']
 }
 
@@ -236,6 +237,10 @@ export class Web3ModalScaffold {
     if (options.enableOnramp) {
       OptionsController.setOnrampEnabled(Boolean(options.enableOnramp))
     }
+
+    if (options.allowUnsupportedChain) {
+      NetworkController.setAllowUnsupportedChain(options.allowUnsupportedChain)
+    }
   }
 
   private async initOrContinue() {