diff --git a/package.json b/package.json
index 8c1cebf..3ac5753 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "sqlparser-devexpress",
-  "version": "2.3.3",
+  "version": "2.3.4",
   "main": "src/index.js",
   "type": "module",
   "scripts": {
diff --git a/src/core/converter.js b/src/core/converter.js
index 078fbff..7b12e24 100644
--- a/src/core/converter.js
+++ b/src/core/converter.js
@@ -141,9 +141,9 @@ function DevExpressConverter() {
         let comparison = [left, operatorToken, right];
 
         if ((ast.left && isFunctionNullCheck(ast.left, true)) || (ast.value && isFunctionNullCheck(ast.value, false))) {
-            comparison = [[left, operatorToken, right], 'or', [left, operatorToken, null]];
+            comparison = [[left, operatorToken, right], 'or', [left, operatorToken, null, {type: "ISNULL", defaultValue: (ast.left ?? ast.value).args[1]?.value}]];
         } else if (ast.right && isFunctionNullCheck(ast.right, true)) {
-            comparison = [[left, operatorToken, right], 'or', [right, operatorToken, null]];
+            comparison = [[left, operatorToken, right], 'or', [right, operatorToken, null, {type: "ISNULL", defaultValue: ast.right.args[1]?.value}]];
         }
 
         // Apply short-circuit evaluation if enabled
@@ -322,7 +322,7 @@ function DevExpressConverter() {
      * @returns {boolean} True if the condition is always true.
      */
     function isAlwaysTrue(condition) {
-        return Array.isArray(condition) && condition.length === 3 && evaluateExpression(...condition) == true;
+        return Array.isArray(condition) && condition.length >= 3 && evaluateExpression(...condition) == true;
     }
 
     /**
@@ -331,7 +331,7 @@ function DevExpressConverter() {
      * @returns {boolean} True if the condition is always false.
      */
     function isAlwaysFalse(condition) {
-        return Array.isArray(condition) && condition.length === 3 && evaluateExpression(...condition) == false;
+        return Array.isArray(condition) && condition.length >= 3 && evaluateExpression(...condition) == false;
     }
 
     /**
diff --git a/tests/parser.test.js b/tests/parser.test.js
index 2c44580..dfd8d1c 100644
--- a/tests/parser.test.js
+++ b/tests/parser.test.js
@@ -137,11 +137,11 @@ describe("Parser SQL to dx Filter Builder", () => {
             expected: [
                 ["SourceID", "=", 2],
                 "or",
-                ["SourceID", "=", null],
+                ["SourceID", "=", null,{ "defaultValue": 0, "type": "ISNULL"}],
                 "or",
                 ["SourceID", "=", 0],
                 "or",
-                ["SourceID", "=", null]
+                ["SourceID", "=", null,{ "defaultValue": 0, "type": "ISNULL"}]
             ]
         },
         {
@@ -153,14 +153,14 @@ describe("Parser SQL to dx Filter Builder", () => {
                     [
                         ["CompanyID", "=", 0],
                         "or",
-                        ["CompanyID", "=", null]
+                        ["CompanyID", "=", null,{ "defaultValue": 0, "type": "ISNULL"}]
                     ]
                 ],
                 "and",
                 [
                     ["IsSubdealer", "=", true],
                     "or",
-                    ["IsSubdealer", "=", null]
+                    ["IsSubdealer", "=", null,{ "defaultValue": 0, "type": "ISNULL"}]
                 ]
             ]
         },
@@ -187,7 +187,7 @@ describe("Parser SQL to dx Filter Builder", () => {
             expected: [
                 ["TicketID", "=", 123],
                 "or",
-                ["TicketID", "=", null]
+                ["TicketID", "=", null,{ "defaultValue": 0, "type": "ISNULL"}]
             ]
         },
         {
@@ -195,11 +195,13 @@ describe("Parser SQL to dx Filter Builder", () => {
             expected: [
                 ["CompanyID", "=", 7],
                 "or",
-                ["CompanyID", "=", null],
+                ["CompanyID", "=", null,{ "defaultValue": 0, "type": "ISNULL"}],
                 "or",
                 ["CompanyID", "=", 0],
                 "or",
-                ["CompanyID", "=", null]
+                ["CompanyID", "=", null,{ "defaultValue": 0, "type": "ISNULL"},
+
+                ]
                 
             ]
         }