diff --git a/contracts/polygon/connectors/limitOrder/helpers.sol b/contracts/polygon/connectors/limitOrder/helpers.sol
index a4f38188..1e35f3d0 100644
--- a/contracts/polygon/connectors/limitOrder/helpers.sol
+++ b/contracts/polygon/connectors/limitOrder/helpers.sol
@@ -51,7 +51,7 @@ contract Helpers is Basic {
         if(params_.token0to1){
             amountSend_ = params_.amount == type(uint128).max ? getTokenBal(TokenInterface(params_.token0)) : params_.amount;
             convertMaticToWmatic(address(token0_) == wmaticAddr, token0_, amountSend_);
-            approve(TokenInterface(token0_), address(limitCon_), amountSend_);
+            approve(token0_, address(limitCon_), amountSend_);
         } else {
             amountSend_ = params_.amount == type(uint128).max ? getTokenBal(TokenInterface(params_.token1)) : params_.amount;
             convertMaticToWmatic(address(token1_) == wmaticAddr, token1_, amountSend_);