diff --git a/.solhint.json b/.solhint.json
index b27480f..587e70f 100644
--- a/.solhint.json
+++ b/.solhint.json
@@ -9,6 +9,7 @@
     "named-parameters-mapping": "warn",
     "no-console": "off",
     "not-rely-on-time": "off",
-    "one-contract-per-file": "off"
+    "one-contract-per-file": "off",
+    "custom-errors": "off"
   }
 }
diff --git a/Makefile b/Makefile
index ee66a87..3e1bab2 100644
--- a/Makefile
+++ b/Makefile
@@ -1,11 +1,11 @@
 VERSION = `git rev-parse --short HEAD`
 PROGRAM=gin bar
 
-all: fmt test
+all: all test
 	@echo Run all scripts ...
 
-fmt:
-	yarn prettier:write && yarn lint && yarn lint:sol 
+lint:
+	yarn lint
 
 test:
 	forge test
\ No newline at end of file
diff --git a/contracts/Ethernaut/01_Fallback.sol b/contracts/Ethernaut/01_Fallback.sol
index 67e8035..6d6822a 100644
--- a/contracts/Ethernaut/01_Fallback.sol
+++ b/contracts/Ethernaut/01_Fallback.sol
@@ -7,7 +7,7 @@ import { Level } from "./00_Ethernaut.sol";
 contract Fallback {
     using Math for uint256;
 
-    mapping(address => uint256) public contributions;
+    mapping(address account => uint256 balance) public contributions;
     address payable public owner;
 
     constructor() payable {
@@ -38,10 +38,8 @@ contract Fallback {
 
     function _fallback() private {
         // naming has switched to fallback
-        require(
-            msg.value > 0 && contributions[msg.sender] > 0,
-            "tx must have value and msg.send must have made a contribution"
-        ); // Add message with require
+        require(msg.value > 0 && contributions[msg.sender] > 0, "Not have made a contribution"); // Add message with
+            // require
         owner = payable(msg.sender); // Type issues must be payable address
     }
 
diff --git a/package.json b/package.json
index 4f74013..c3e274a 100644
--- a/package.json
+++ b/package.json
@@ -22,11 +22,9 @@
   "private": true,
   "scripts": {
     "clean": "rm -rf cache out broadcast",
-    "build": "forge build",
-    "lint": "yarn lint:sol && yarn prettier:check",
-    "lint:sol": "forge fmt --check && yarn solhint foundry/{script,src,test}/**/*.sol",
-    "prettier:check": "prettier --check **/*.{json,md,yml} --ignore-path=.prettierignore",
-    "prettier:write": "prettier --write **/*.{json,md,yml} --ignore-path=.prettierignore",
+    "lint": "yarn lint:sol && yarn lint:prettier",
+    "lint:sol": "forge fmt && yarn solhint foundry/test/**/*.sol contracts/**/*.sol --fix",
+    "lint:prettier": "prettier --write **/*.{json,md,yml} --ignore-path=.prettierignore",
     "test": "forge test",
     "test:coverage": "forge coverage",
     "test:coverage:report": "forge coverage --report lcov && genhtml lcov.info --branch-coverage --output-dir foundry/coverage"