diff --git a/lib/core.ts b/lib/core.ts
index c1485fe..a19dc25 100644
--- a/lib/core.ts
+++ b/lib/core.ts
@@ -9,6 +9,7 @@ interface Internals {
     function: FunctionConstructor;
     array: ArrayConstructor;
     promise: PromiseConstructor;
+    bool: BooleanConstructor;
 
     markSpecial(...funcs: Function[]): void;
     getEnv(func: Function): Environment | undefined;
@@ -46,21 +47,22 @@ try {
     var Function = env.global.Function = internals.function;
     var Array = env.global.Array = internals.array;
     var Promise = env.global.Promise = internals.promise;
+    var Boolean = env.global.Boolean = internals.bool;
 
     env.setProto('object', Object.prototype);
     env.setProto('function', Function.prototype);
     env.setProto('array', Array.prototype);
+    env.setProto('bool', Boolean.prototype);
+
     (Object.prototype as any).__proto__ = null;
 
     internals.getEnv(run)?.setProto('array', Array.prototype);
-
     globalThis.log = (...args) => internals.apply(internals.log, internals, args);
 
     run('values/symbol');
     run('values/errors');
     run('values/string');
     run('values/number');
-    run('values/boolean');
     run('map');
     run('set');
     run('regex');
diff --git a/lib/lib.d.ts b/lib/lib.d.ts
index 4e83de2..5ce6aab 100644
--- a/lib/lib.d.ts
+++ b/lib/lib.d.ts
@@ -244,6 +244,7 @@ interface ArrayConstructor {
 }
 
 interface Boolean {
+    toString(): string;
     valueOf(): boolean;
 }
 interface BooleanConstructor {
diff --git a/lib/tsconfig.json b/lib/tsconfig.json
index 01d7996..497b3a9 100644
--- a/lib/tsconfig.json
+++ b/lib/tsconfig.json
@@ -7,7 +7,6 @@
         "values/errors.ts",
         "values/string.ts",
         "values/number.ts",
-        "values/boolean.ts",
         "map.ts",
         "set.ts",
         "regex.ts",
diff --git a/lib/values/boolean.ts b/lib/values/boolean.ts
deleted file mode 100644
index c0d45a2..0000000
--- a/lib/values/boolean.ts
+++ /dev/null
@@ -1,12 +0,0 @@
-define("values/boolean", () => {
-    var Boolean = env.global.Boolean = function (this: Boolean | undefined, arg) {
-        var val;
-        if (arguments.length === 0) val = false;
-        else val = !!arg;
-        if (this === undefined || this === null) return val;
-        else (this as any).value = val;
-    } as BooleanConstructor;
-    
-    env.setProto('bool', Boolean.prototype);
-    setConstr(Boolean.prototype, Boolean);
-});
diff --git a/src/me/topchetoeu/jscript/engine/values/Values.java b/src/me/topchetoeu/jscript/engine/values/Values.java
index 03dffd9..8d892e3 100644
--- a/src/me/topchetoeu/jscript/engine/values/Values.java
+++ b/src/me/topchetoeu/jscript/engine/values/Values.java
@@ -377,14 +377,13 @@ public class Values {
         return function(func).call(ctx, thisArg, args);
     }
     public static Object callNew(Context ctx, Object func, Object ...args) throws InterruptedException {
-        if (func instanceof FunctionValue && ((FunctionValue)func).special) return ((FunctionValue)func).call(ctx, null, args);
-
         var res = new ObjectValue();
         var proto = Values.getMember(ctx, func, "prototype");
         res.setPrototype(ctx, proto);
 
-        call(ctx, func, res, args);
+        var ret = call(ctx, func, res, args);
 
+        if (ret != null && func instanceof FunctionValue && ((FunctionValue)func).special) return ret;
         return res;
     }
 
diff --git a/src/me/topchetoeu/jscript/polyfills/BooleanPolyfill.java b/src/me/topchetoeu/jscript/polyfills/BooleanPolyfill.java
new file mode 100644
index 0000000..4d2c77e
--- /dev/null
+++ b/src/me/topchetoeu/jscript/polyfills/BooleanPolyfill.java
@@ -0,0 +1,24 @@
+package me.topchetoeu.jscript.polyfills;
+
+import me.topchetoeu.jscript.engine.Context;
+import me.topchetoeu.jscript.engine.values.ObjectValue;
+import me.topchetoeu.jscript.engine.values.Values;
+import me.topchetoeu.jscript.interop.Native;
+import me.topchetoeu.jscript.interop.NativeConstructor;
+
+public class BooleanPolyfill {
+    @NativeConstructor(thisArg = true) public static Object constructor(Context ctx, Object thisArg, Object val) {
+        val = Values.toBoolean(val);
+        if (thisArg instanceof ObjectValue) {
+            ((ObjectValue)thisArg).defineProperty(ctx, "value", val);
+            return null;
+        }
+        else return val;
+    }
+    @Native(thisArg = true) public static String toString(Context ctx, Object thisArg) {
+        return Values.toBoolean(thisArg) ? "true" : "false";
+    }
+    @Native(thisArg = true) public static boolean valueOf(Context ctx, Object thisArg) {
+        return Values.toBoolean(thisArg);
+    }
+}
diff --git a/src/me/topchetoeu/jscript/polyfills/Internals.java b/src/me/topchetoeu/jscript/polyfills/Internals.java
index d09bb4b..9d3d8cd 100644
--- a/src/me/topchetoeu/jscript/polyfills/Internals.java
+++ b/src/me/topchetoeu/jscript/polyfills/Internals.java
@@ -14,10 +14,7 @@ import me.topchetoeu.jscript.interop.Native;
 public class Internals {
     public final Environment targetEnv;
 
-    @Native public final FunctionValue object;
-    @Native public final FunctionValue function;
-    @Native public final FunctionValue promise;
-    @Native public final FunctionValue array;
+    @Native public final FunctionValue object, function, promise, array, bool;
 
     @Native public void markSpecial(FunctionValue ...funcs) {
         for (var func : funcs) {
@@ -160,5 +157,6 @@ public class Internals {
         this.function = targetEnv.wrappersProvider.getConstr(FunctionPolyfill.class);
         this.promise = targetEnv.wrappersProvider.getConstr(PromisePolyfill.class);
         this.array = targetEnv.wrappersProvider.getConstr(ArrayPolyfill.class);
+        this.bool = targetEnv.wrappersProvider.getConstr(BooleanPolyfill.class);
     }
 }
diff --git a/src/me/topchetoeu/jscript/polyfills/ObjectPolyfill.java b/src/me/topchetoeu/jscript/polyfills/ObjectPolyfill.java
index 0c15f92..66387ee 100644
--- a/src/me/topchetoeu/jscript/polyfills/ObjectPolyfill.java
+++ b/src/me/topchetoeu/jscript/polyfills/ObjectPolyfill.java
@@ -201,9 +201,9 @@ public class ObjectPolyfill {
         return ObjectPolyfill.hasOwn(ctx, thisArg, Values.convert(ctx, key, String.class));
     }
 
-    @NativeConstructor public static Object constructor(Context ctx, Object arg) throws InterruptedException {
+    @NativeConstructor(thisArg = true) public static Object constructor(Context ctx, Object thisArg, Object arg) throws InterruptedException {
         if (arg == null || arg == Values.NULL) return new ObjectValue();
-        else if (arg instanceof Boolean) return Values.callNew(ctx, ctx.env.global.get(ctx, "Boolean"), arg);
+        else if (arg instanceof Boolean) return BooleanPolyfill.constructor(ctx, thisArg, arg);
         else if (arg instanceof Number) return Values.callNew(ctx, ctx.env.global.get(ctx, "Number"), arg);
         else if (arg instanceof String) return Values.callNew(ctx, ctx.env.global.get(ctx, "String"), arg);
         else if (arg instanceof Symbol) return Values.callNew(ctx, ctx.env.global.get(ctx, "Symbol"), arg);