diff --git a/dlls/jscript/math.c b/dlls/jscript/math.c
index 8803f7c53c7..e0e88e4ca27 100644
--- a/dlls/jscript/math.c
+++ b/dlls/jscript/math.c
@@ -160,11 +160,27 @@ static HRESULT Math_atan2(DispatchEx *dispex, LCID lcid, WORD flags, DISPPARAMS
     return E_NOTIMPL;
 }
 
+/* ECMA-262 3rd Edition    15.8.2.6 */
 static HRESULT Math_ceil(DispatchEx *dispex, LCID lcid, WORD flags, DISPPARAMS *dp,
         VARIANT *retv, jsexcept_t *ei, IServiceProvider *sp)
 {
-    FIXME("\n");
-    return E_NOTIMPL;
+    VARIANT v;
+    HRESULT hres;
+
+    TRACE("\n");
+
+    if(!arg_cnt(dp)) {
+        FIXME("arg_cnt = 0\n");
+        return E_NOTIMPL;
+    }
+
+    hres = to_number(dispex->ctx, get_arg(dp, 0), ei, &v);
+    if(FAILED(hres))
+        return hres;
+
+    if(retv)
+        num_set_val(retv, ceil(num_val(&v)));
+    return S_OK;
 }
 
 static HRESULT Math_cos(DispatchEx *dispex, LCID lcid, WORD flags, DISPPARAMS *dp,
@@ -233,7 +249,6 @@ static HRESULT Math_max(DispatchEx *dispex, LCID lcid, WORD flags, DISPPARAMS *d
     return S_OK;
 }
 
-
 /* ECMA-262 3rd Edition    15.8.2.12 */
 static HRESULT Math_min(DispatchEx *dispex, LCID lcid, WORD flags, DISPPARAMS *dp,
         VARIANT *retv, jsexcept_t *ei, IServiceProvider *sp)
diff --git a/dlls/jscript/tests/api.js b/dlls/jscript/tests/api.js
index 7796623f5e8..d590308b5d7 100644
--- a/dlls/jscript/tests/api.js
+++ b/dlls/jscript/tests/api.js
@@ -279,6 +279,21 @@ ok(tmp === 1, "Math.round(true) = " + tmp);
 tmp = Math.round(1.1, 3, 4);
 ok(tmp === 1, "Math.round(1.1, 3, 4) = " + tmp);
 
+tmp = Math.ceil(0.5);
+ok(tmp === 1, "Math.ceil(0.5) = " + tmp);
+
+tmp = Math.ceil(-0.5);
+ok(tmp === 0, "Math.ceil(-0.5) = " + tmp);
+
+tmp = Math.ceil(1.1);
+ok(tmp === 2, "Math.round(1.1) = " + tmp);
+
+tmp = Math.ceil(true);
+ok(tmp === 1, "Math.ceil(true) = " + tmp);
+
+tmp = Math.ceil(1.1, 3, 4);
+ok(tmp === 2, "Math.ceil(1.1, 3, 4) = " + tmp);
+
 tmp = Math.abs(3);
 ok(tmp === 3, "Math.abs(3) = " + tmp);