diff --git a/src/Math/Functions.h b/src/Math/Functions.h
index d324983a5..9d25668f6 100644
--- a/src/Math/Functions.h
+++ b/src/Math/Functions.h
@@ -289,7 +289,6 @@ integral type.
     range is undefined.
 
 @see normalize()
-@todo Fix test for UnsignedLong
 */
 #ifdef DOXYGEN_GENERATING_OUTPUT
 template<class Integral, class FloatingPoint> inline Integral denormalize(const FloatingPoint& value);
diff --git a/src/Math/Test/FunctionsTest.cpp b/src/Math/Test/FunctionsTest.cpp
index ed32bb73e..6fd0b63d7 100644
--- a/src/Math/Test/FunctionsTest.cpp
+++ b/src/Math/Test/FunctionsTest.cpp
@@ -187,12 +187,8 @@ void FunctionsTest::denormalizeUnsigned() {
     CORRADE_COMPARE(Math::denormalize<UnsignedInt>(0.0), 0);
     CORRADE_COMPARE(Math::denormalize<UnsignedInt>(1.0), std::numeric_limits<UnsignedInt>::max());
 
-    CORRADE_COMPARE(Math::denormalize<UnsignedLong>(0.0), 0);
-    {
-        CORRADE_EXPECT_FAIL("Wrong result with GCC and non-optimized code.");
-        CORRADE_VERIFY(false);
-        //CORRADE_COMPARE(Math::denormalize<UnsignedLong>(1.0), std::numeric_limits<UnsignedLong>::max());
-    }
+    CORRADE_COMPARE(Math::denormalize<UnsignedLong>(0.0l), 0);
+    CORRADE_COMPARE(Math::denormalize<UnsignedLong>(1.0l), std::numeric_limits<UnsignedLong>::max());
     #endif
 
     CORRADE_COMPARE(Math::denormalize<UnsignedShort>(0.33f), 21626);