diff --git a/src/Platform/NaClApplication.h b/src/Platform/NaClApplication.h
index 874499f56..050e93164 100644
--- a/src/Platform/NaClApplication.h
+++ b/src/Platform/NaClApplication.h
@@ -176,7 +176,7 @@ class NaClApplication: public pp::Instance, public pp::Graphics3DClient, public
         /*@}*/
 
     private:
-        enum class Flag: std::uint8_t {
+        enum class Flag: UnsignedByte {
             ViewportUpdated = 1 << 0,
             SwapInProgress = 1 << 1,
             Redraw = 1 << 2,
@@ -184,7 +184,7 @@ class NaClApplication: public pp::Instance, public pp::Graphics3DClient, public
             WillBeFullscreen = 1 << 4,
             MouseLocked = 1 << 5
         };
-        typedef Corrade::Containers::EnumSet<Flag, std::uint8_t> Flags;
+        typedef Corrade::Containers::EnumSet<Flag, UnsignedByte> Flags;
 
         inline void Graphics3DContextLost() override {
             CORRADE_ASSERT(false, "NaClApplication: context unexpectedly lost", );
diff --git a/src/Platform/Sdl2Application.h b/src/Platform/Sdl2Application.h
index 59f11c881..ec1b85058 100644
--- a/src/Platform/Sdl2Application.h
+++ b/src/Platform/Sdl2Application.h
@@ -152,12 +152,12 @@ class Sdl2Application {
         /*@}*/
 
     private:
-        enum class Flag: std::uint8_t {
+        enum class Flag: UnsignedByte {
             Redraw = 1 << 0,
             Exit = 1 << 1
         };
 
-        typedef Corrade::Containers::EnumSet<Flag, unsigned int> Flags;
+        typedef Corrade::Containers::EnumSet<Flag, UnsignedByte> Flags;
         CORRADE_ENUMSET_FRIEND_OPERATORS(Flags)
 
         SDL_Window* window;