diff --git a/packages/contracts/contracts/src/AdvancedChecker.sol b/packages/contracts/contracts/src/AdvancedChecker.sol
index 3e09eff..9693ae7 100644
--- a/packages/contracts/contracts/src/AdvancedChecker.sol
+++ b/packages/contracts/contracts/src/AdvancedChecker.sol
@@ -17,21 +17,21 @@ struct CheckStatus {
 /// based on the specified check type.
 abstract contract AdvancedChecker is IAdvancedChecker {
     /// @notice Flag to determine if pre-condition checks should be skipped.
-    bool public skipPre;
+    bool public immutable SKIP_PRE;
 
     /// @notice Flag to determine if post-condition checks should be skipped.
-    bool public skipPost;
+    bool public immutable SKIP_POST;
 
     /// @notice Flag to determine if main checks can be executed multiple times.
-    bool public allowMultipleMain;
+    bool public immutable ALLOW_MULTIPLE_MAIN;
 
     /// @param _skipPre Indicates whether to skip pre-condition checks.
     /// @param _skipPost Indicates whether to skip post-condition checks.
     /// @param _allowMultipleMain Indicates whether the main check can be executed multiple times.
     constructor(bool _skipPre, bool _skipPost, bool _allowMultipleMain) {
-        skipPre = _skipPre;
-        skipPost = _skipPost;
-        allowMultipleMain = _allowMultipleMain;
+        SKIP_PRE = _skipPre;
+        SKIP_POST = _skipPost;
+        ALLOW_MULTIPLE_MAIN = _allowMultipleMain;
     }
 
     /// @notice Public method to check the validity of the provided evidence for a given address and check type.
@@ -51,14 +51,14 @@ abstract contract AdvancedChecker is IAdvancedChecker {
     /// @param evidence The evidence associated with the check.
     /// @param checkType The type of check to perform (PRE, MAIN, POST).
     function _check(address subject, bytes memory evidence, Check checkType) internal view returns (bool checked) {
-        if (skipPre && checkType == Check.PRE) revert PreCheckSkipped();
-        if (skipPost && checkType == Check.POST) revert PostCheckSkipped();
+        if (SKIP_PRE && checkType == Check.PRE) revert PreCheckSkipped();
+        if (SKIP_POST && checkType == Check.POST) revert PostCheckSkipped();
 
-        if (!skipPre && checkType == Check.PRE) {
+        if (!SKIP_PRE && checkType == Check.PRE) {
             return _checkPre(subject, evidence);
         }
 
-        if (!skipPost && checkType == Check.POST) {
+        if (!SKIP_POST && checkType == Check.POST) {
             return _checkPost(subject, evidence);
         }
 
diff --git a/packages/contracts/contracts/src/AdvancedPolicy.sol b/packages/contracts/contracts/src/AdvancedPolicy.sol
index 1e32fb5..d8bc928 100644
--- a/packages/contracts/contracts/src/AdvancedPolicy.sol
+++ b/packages/contracts/contracts/src/AdvancedPolicy.sol
@@ -42,7 +42,7 @@ abstract contract AdvancedPolicy is IAdvancedPolicy, Policy {
         }
 
         if (checkType == Check.PRE) {
-            if (!ADVANCED_CHECKER.skipPost() && enforced[msg.sender][subject].pre) {
+            if (!ADVANCED_CHECKER.SKIP_POST() && enforced[msg.sender][subject].pre) {
                 revert AlreadyEnforced();
             } else {
                 enforced[msg.sender][subject].pre = true;
@@ -52,7 +52,7 @@ abstract contract AdvancedPolicy is IAdvancedPolicy, Policy {
                 if (enforced[msg.sender][subject].post) {
                     revert AlreadyEnforced();
                 } else {
-                    if (!ADVANCED_CHECKER.skipPre() && !enforced[msg.sender][subject].pre) {
+                    if (!ADVANCED_CHECKER.SKIP_PRE() && !enforced[msg.sender][subject].pre) {
                         revert PreCheckNotEnforced();
                     } else {
                         if (enforced[msg.sender][subject].main == 0) {
@@ -65,12 +65,12 @@ abstract contract AdvancedPolicy is IAdvancedPolicy, Policy {
             } else {
                 if (
                     checkType == Check.MAIN &&
-                    !ADVANCED_CHECKER.allowMultipleMain() &&
+                    !ADVANCED_CHECKER.ALLOW_MULTIPLE_MAIN() &&
                     enforced[msg.sender][subject].main > 0
                 ) {
                     revert MainCheckAlreadyEnforced();
                 } else {
-                    if (checkType == Check.MAIN && !ADVANCED_CHECKER.skipPre() && !enforced[msg.sender][subject].pre) {
+                    if (checkType == Check.MAIN && !ADVANCED_CHECKER.SKIP_PRE() && !enforced[msg.sender][subject].pre) {
                         revert PreCheckNotEnforced();
                     } else {
                         enforced[msg.sender][subject].main += 1;