diff --git a/src/Magnum/Test/ImageTest.cpp b/src/Magnum/Test/ImageTest.cpp
index b9903bccf..49523c8a2 100644
--- a/src/Magnum/Test/ImageTest.cpp
+++ b/src/Magnum/Test/ImageTest.cpp
@@ -180,8 +180,6 @@ namespace Vk {
         #endif
         return 12;
     }
-
-    enum class CompressedPixelFormat { Bc1SRGBAlpha = 42 };
 }
 
 void ImageTest::constructGeneric() {
diff --git a/src/Magnum/Test/ImageViewTest.cpp b/src/Magnum/Test/ImageViewTest.cpp
index 018a8c1ee..b918f6823 100644
--- a/src/Magnum/Test/ImageViewTest.cpp
+++ b/src/Magnum/Test/ImageViewTest.cpp
@@ -174,8 +174,6 @@ namespace Vk {
         #endif
         return 12;
     }
-
-    enum class CompressedPixelFormat { Bc1SRGBAlpha = 42 };
 }
 
 template<class T> void ImageViewTest::constructGeneric() {
diff --git a/src/Magnum/Trade/Test/ImageDataTest.cpp b/src/Magnum/Trade/Test/ImageDataTest.cpp
index a627801c1..eb29c9f8e 100644
--- a/src/Magnum/Trade/Test/ImageDataTest.cpp
+++ b/src/Magnum/Trade/Test/ImageDataTest.cpp
@@ -208,8 +208,6 @@ namespace Vk {
         #endif
         return 12;
     }
-
-    enum class CompressedPixelFormat { Bc1SRGBAlpha = 42 };
 }
 
 void ImageDataTest::constructGeneric() {