From e6fffb3c8396469ea81a8888464b49c50f5042cb Mon Sep 17 00:00:00 2001
From: Daniel Simon <daniel.attila.simon@gmail.com>
Date: Sun, 31 May 2020 17:31:23 +0700
Subject: [PATCH] Fix 'TypeError: this is undefined'

---
 packages/contracts/src.ts/index.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/contracts/src.ts/index.ts b/packages/contracts/src.ts/index.ts
index 94eda92401..b786ab4e6c 100644
--- a/packages/contracts/src.ts/index.ts
+++ b/packages/contracts/src.ts/index.ts
@@ -202,7 +202,7 @@ async function populateCallTransaction(contract: Contract, fragment: FunctionFra
     delete overrides.from;
 
     const tx = await populateTransaction(contract, fragment, args, overrides);
-    if (ro.from) { (<any>tx).from = this.interface.constructor.getAddress(ro.from); }
+    if (ro.from) { (<any>tx).from = (<any>(contract.interface.constructor)).getAddress(ro.from); }
 
     return tx;
 }