diff --git a/dlls/jscript/dispex.c b/dlls/jscript/dispex.c
index 44008bdc7eb..909ed37874f 100644
--- a/dlls/jscript/dispex.c
+++ b/dlls/jscript/dispex.c
@@ -922,7 +922,6 @@ HRESULT init_dispex_from_constr(jsdisp_t *dispex, script_ctx_t *ctx, const built
     dispex_prop_t *prop;
     HRESULT hres;
 
-    static const WCHAR constructorW[] = {'c','o','n','s','t','r','u','c','t','o','r',0};
     static const WCHAR prototypeW[] = {'p','r','o','t','o','t','y','p','e',0};
 
     hres = find_prop_name_prot(constr, string_hash(prototypeW), prototypeW, &prop);
@@ -947,21 +946,6 @@ HRESULT init_dispex_from_constr(jsdisp_t *dispex, script_ctx_t *ctx, const built
 
     if(prot)
         jsdisp_release(prot);
-    if(FAILED(hres))
-        return hres;
-
-    hres = ensure_prop_name(dispex, constructorW, FALSE, 0, &prop);
-    if(SUCCEEDED(hres)) {
-        jsexcept_t jsexcept;
-        VARIANT var;
-
-        var_set_jsdisp(&var, constr);
-        memset(&jsexcept, 0, sizeof(jsexcept));
-        hres = prop_put(dispex, prop, &var, &jsexcept, NULL/*FIXME*/);
-    }
-    if(FAILED(hres))
-        jsdisp_release(dispex);
-
     return hres;
 }
 
@@ -1245,6 +1229,18 @@ HRESULT jsdisp_propput_const(jsdisp_t *obj, const WCHAR *name, VARIANT *val)
     return VariantCopy(&prop->u.var, val);
 }
 
+HRESULT jsdisp_propput_dontenum(jsdisp_t *obj, const WCHAR *name, VARIANT *val)
+{
+    dispex_prop_t *prop;
+    HRESULT hres;
+
+    hres = ensure_prop_name(obj, name, FALSE, 0, &prop);
+    if(FAILED(hres))
+        return hres;
+
+    return VariantCopy(&prop->u.var, val);
+}
+
 HRESULT jsdisp_propput_idx(jsdisp_t *obj, DWORD idx, VARIANT *val, jsexcept_t *ei)
 {
     WCHAR buf[12];
diff --git a/dlls/jscript/function.c b/dlls/jscript/function.c
index 1d188e77238..1ce1124bcdf 100644
--- a/dlls/jscript/function.c
+++ b/dlls/jscript/function.c
@@ -647,7 +647,7 @@ static HRESULT set_constructor_prop(script_ctx_t *ctx, jsdisp_t *constr, jsdisp_
 
     V_VT(&v) = VT_DISPATCH;
     V_DISPATCH(&v) = to_disp(constr);
-    return jsdisp_propput_name(prot, constructorW, &v, NULL);
+    return jsdisp_propput_dontenum(prot, constructorW, &v);
 }
 
 HRESULT create_builtin_constructor(script_ctx_t *ctx, builtin_invoke_t value_proc, const WCHAR *name,
@@ -684,6 +684,8 @@ HRESULT create_source_function(script_ctx_t *ctx, bytecode_t *code, function_cod
     hres = create_function(ctx, NULL, PROPF_CONSTR, FALSE, NULL, &function);
     if(SUCCEEDED(hres)) {
         hres = set_prototype(ctx, &function->dispex, prototype);
+        if(SUCCEEDED(hres))
+            hres = set_constructor_prop(ctx, &function->dispex, prototype);
         if(FAILED(hres))
             jsdisp_release(&function->dispex);
     }
diff --git a/dlls/jscript/jscript.h b/dlls/jscript/jscript.h
index ca91ee69abf..484049ca790 100644
--- a/dlls/jscript/jscript.h
+++ b/dlls/jscript/jscript.h
@@ -216,6 +216,7 @@ HRESULT disp_propput(script_ctx_t*,IDispatch*,DISPID,VARIANT*,jsexcept_t*) DECLS
 HRESULT jsdisp_propget(jsdisp_t*,DISPID,VARIANT*,jsexcept_t*) DECLSPEC_HIDDEN;
 HRESULT jsdisp_propput_name(jsdisp_t*,const WCHAR*,VARIANT*,jsexcept_t*) DECLSPEC_HIDDEN;
 HRESULT jsdisp_propput_const(jsdisp_t*,const WCHAR*,VARIANT*) DECLSPEC_HIDDEN;
+HRESULT jsdisp_propput_dontenum(jsdisp_t*,const WCHAR*,VARIANT*) DECLSPEC_HIDDEN;
 HRESULT jsdisp_propput_idx(jsdisp_t*,DWORD,VARIANT*,jsexcept_t*) DECLSPEC_HIDDEN;
 HRESULT jsdisp_propget_name(jsdisp_t*,LPCWSTR,VARIANT*,jsexcept_t*) DECLSPEC_HIDDEN;
 HRESULT jsdisp_get_idx(jsdisp_t*,DWORD,VARIANT*,jsexcept_t*) DECLSPEC_HIDDEN;
diff --git a/dlls/jscript/tests/lang.js b/dlls/jscript/tests/lang.js
index 515f1b56ea1..26a28b84215 100644
--- a/dlls/jscript/tests/lang.js
+++ b/dlls/jscript/tests/lang.js
@@ -91,8 +91,15 @@ ok(Function.prototype.prototype === undefined, "Function.prototype.prototype is
 ok(Date.prototype !== undefined, "Date.prototype is undefined");
 ok(Date.prototype.prototype === undefined, "Date.prototype is not undefined");
 
-function testConstructor(constr, name) {
+function testConstructor(constr, name, inst) {
     ok(constr.prototype.constructor === constr, name + ".prototype.constructor !== " + name);
+    ok(constr.prototype.hasOwnProperty("constructor"), name + ".prototype.hasOwnProperty('constructor')");
+
+    if(!inst)
+        inst = new constr();
+
+    ok(inst.constructor === constr, "(new " + name + "()).constructor !== " + name);
+    ok(!inst.hasOwnProperty("constructor"), "(new " + name + "()).hasOwnProperty('constructor')");
 }
 
 testConstructor(Object, "Object");
@@ -100,10 +107,10 @@ testConstructor(String, "String");
 testConstructor(Array, "Array");
 testConstructor(Boolean, "Boolean");
 testConstructor(Number, "Number");
-testConstructor(RegExp, "RegExp");
+testConstructor(RegExp, "RegExp", /x/);
 testConstructor(Function, "Function");
 testConstructor(Date, "Date");
-testConstructor(VBArray, "VBArray");
+testConstructor(VBArray, "VBArray", new VBArray(createArray()));
 testConstructor(Error, "Error");
 testConstructor(EvalError, "EvalError");
 testConstructor(RangeError, "RangeError");
@@ -194,11 +201,13 @@ function testConstr1() {
 }
 
 testConstr1.prototype.pvar = 1;
+ok(testConstr1.prototype.constructor === testConstr1, "testConstr1.prototype.constructor !== testConstr1");
 
 var obj2 = new testConstr1(true);
 ok(typeof(obj2) === "object", "typeof(obj2) is not object");
 ok(obj2.constructor === testConstr1, "unexpected obj2.constructor");
 ok(obj2.pvar === 1, "obj2.pvar is not 1");
+ok(!obj2.hasOwnProperty('constructor'), "obj2.hasOwnProperty('constructor')");
 
 testConstr1.prototype.pvar = 2;
 ok(obj2.pvar === 2, "obj2.pvar is not 2");