diff --git a/packages/subproviders/CHANGELOG.json b/packages/subproviders/CHANGELOG.json
index 1d569b4b50..283989fa0a 100644
--- a/packages/subproviders/CHANGELOG.json
+++ b/packages/subproviders/CHANGELOG.json
@@ -3,8 +3,8 @@
         "version": "4.1.2",
         "changes": [
             {
-                "note": "Fix bug in Trezor subprovider causing Trezor response to not be hex encoded",
-                "pr": "WIP"
+                "note": "Fix bug in Private Key subprovider causing checksummed tx.origin addresses to be rejected.",
+                "pr": 1962
             }
         ],
         "timestamp": 1563240294
diff --git a/packages/subproviders/src/subproviders/private_key_wallet.ts b/packages/subproviders/src/subproviders/private_key_wallet.ts
index 98bc8963eb..67693ac44d 100644
--- a/packages/subproviders/src/subproviders/private_key_wallet.ts
+++ b/packages/subproviders/src/subproviders/private_key_wallet.ts
@@ -47,7 +47,7 @@ export class PrivateKeyWalletSubprovider extends BaseWalletSubprovider {
      */
     public async signTransactionAsync(txParams: PartialTxParams): Promise<string> {
         PrivateKeyWalletSubprovider._validateTxParams(txParams);
-        if (txParams.from !== undefined && txParams.from !== this._address) {
+        if (txParams.from !== undefined && txParams.from.toLowerCase() !== this._address.toLowerCase()) {
             throw new Error(
                 `Requested to sign transaction with address: ${txParams.from}, instantiated with address: ${
                     this._address