diff --git a/unitTests/test_ImageFactory.cpp b/unitTests/test_ImageFactory.cpp
index 710ab481..51816680 100644
--- a/unitTests/test_ImageFactory.cpp
+++ b/unitTests/test_ImageFactory.cpp
@@ -42,6 +42,11 @@ TEST(TheImageFactory, cannotCreateInstancesForSomeTypesInMemory)
     EXPECT_THROW(ImageFactory::create(ImageType::srw), Error);
 }
 
+TEST(TheImageFactory, throwsWithNonExistingImageTypes)
+{
+    EXPECT_THROW(ImageFactory::create(static_cast<ImageType>(666)), Error);
+}
+
 
 TEST(TheImageFactory, createsInstancesForSupportedTypesInFiles)
 {