diff --git a/dlls/jscript/jsutils.c b/dlls/jscript/jsutils.c
index 19c3b8d5a27..7184cb903b3 100644
--- a/dlls/jscript/jsutils.c
+++ b/dlls/jscript/jsutils.c
@@ -253,19 +253,54 @@ HRESULT to_int32(script_ctx_t *ctx, VARIANT *v, jsexcept_t *ei, INT *ret)
     return S_OK;
 }
 
+static BSTR int_to_bstr(INT i)
+{
+    WCHAR buf[12], *p;
+    BOOL neg = FALSE;
+
+    if(!i) {
+        static const WCHAR zeroW[] = {'0',0};
+        return SysAllocString(zeroW);
+    }
+
+    if(i < 0) {
+        neg = TRUE;
+        i = -i;
+    }
+
+    p = buf + sizeof(buf)/sizeof(*buf)-1;
+    *p-- = 0;
+    while(i) {
+        *p-- = i%10 + '0';
+        i /= 10;
+    }
+
+    if(neg)
+        *p = '-';
+    else
+        p++;
+
+    return SysAllocString(p);
+}
+
 /* ECMA-262 3rd Edition    9.8 */
 HRESULT to_string(script_ctx_t *ctx, VARIANT *v, jsexcept_t *ei, BSTR *str)
 {
     switch(V_VT(v)) {
+    case VT_I4:
+        *str = int_to_bstr(V_I4(v));
+        break;
+
     case VT_BSTR:
         *str = SysAllocString(V_BSTR(v));
-        return S_OK;
+        break;
 
     default:
         FIXME("unsupported vt %d\n", V_VT(v));
+        return E_NOTIMPL;
     }
 
-    return E_NOTIMPL;
+    return *str ? S_OK : E_OUTOFMEMORY;
 }
 
 /* ECMA-262 3rd Edition    9.9 */
diff --git a/dlls/jscript/tests/lang.js b/dlls/jscript/tests/lang.js
index afb71bf8cca..e2b5800ef61 100644
--- a/dlls/jscript/tests/lang.js
+++ b/dlls/jscript/tests/lang.js
@@ -312,6 +312,10 @@ ok(+true === 1, "+true !== 1");
 ok(+false === 0, "+false !== 0");
 ok(+null === 0, "+null !== 0");
 
+ok("" + 0 === "0", "\"\" + 0 !== \"0\"");
+ok("" + 123 === "123", "\"\" + 123 !== \"123\"");
+ok("" + (-5) === "-5", "\"\" + (-5) !== \"-5\"");
+
 ok(1 < 3.4, "1 < 3.4 failed");
 ok(!(3.4 < 1), "3.4 < 1");
 ok("abc" < "abcd", "abc < abcd failed");
@@ -544,5 +548,6 @@ ok(tmp.length === 7, "tmp.length !== 7");
 ok(tmp["0"] === undefined, "tmp[0] is not undefined");
 ok(tmp["3"] === 2, "tmp[3] !== 2");
 ok(tmp["6"] === true, "tmp[6] !== true");
+ok(tmp[2] === 1, "tmp[2] !== 1");
 
 reportSuccess();