1 files changed, 3 insertions, 3 deletions
diff --git a/src/contract_wrappers/proxy_wrapper.ts b/src/contract_wrappers/proxy_wrapper.ts
index bdf163f35..05d4e142c 100644
--- a/src/contract_wrappers/proxy_wrapper.ts
+++ b/src/contract_wrappers/proxy_wrapper.ts
@@ -9,9 +9,6 @@ import {ProxyContract} from '../types';
  */
 export class ProxyWrapper extends ContractWrapper {
     private _proxyContractIfExists?: ProxyContract;
-    public invalidateContractInstance(): void {
-        delete this._proxyContractIfExists;
-    }
     /**
      * Check if the Exchange contract address is authorized by the Proxy contract.
      * @param   exchangeContractAddress     The hex encoded address of the Exchange contract to call.
@@ -32,6 +29,9 @@ export class ProxyWrapper extends ContractWrapper {
         const authorizedAddresses = await proxyContractInstance.getAuthorizedAddresses.call();
         return authorizedAddresses;
     }
+    private _invalidateContractInstance(): void {
+        delete this._proxyContractIfExists;
+    }
     private async _getProxyContractAsync(): Promise<ProxyContract> {
         if (!_.isUndefined(this._proxyContractIfExists)) {
             return this._proxyContractIfExists;