diff --git a/packages/protocol/contracts/test/erc20/FreeMintERC20.sol b/packages/protocol/contracts/test/erc20/FreeMintERC20.sol
index 4830bd584c..2e4328c853 100644
--- a/packages/protocol/contracts/test/erc20/FreeMintERC20.sol
+++ b/packages/protocol/contracts/test/erc20/FreeMintERC20.sol
@@ -14,6 +14,6 @@ contract FreeMintERC20 is ERC20 {
     constructor(string memory name, string memory symbol) ERC20(name, symbol) {}
 
     function mint(address to) public {
-        _mint(to, 5 ** decimals());
+        _mint(to, 5 * (10 ** decimals()));
     }
 }
diff --git a/packages/protocol/contracts/test/erc20/MayFailFreeMintERC20.sol b/packages/protocol/contracts/test/erc20/MayFailFreeMintERC20.sol
index 6e38de584e..bba5df63e8 100644
--- a/packages/protocol/contracts/test/erc20/MayFailFreeMintERC20.sol
+++ b/packages/protocol/contracts/test/erc20/MayFailFreeMintERC20.sol
@@ -15,7 +15,7 @@ contract MayFailFreeMintERC20 is ERC20 {
     constructor(string memory name, string memory symbol) ERC20(name, symbol) {}
 
     function mint(address to) public {
-        _mint(to, 5 ** decimals());
+        _mint(to, 5 * (10 ** decimals()));
     }
 
     function transfer(