diff --git a/include/guecs/ui.hpp b/include/guecs/ui.hpp
index faf8327..bb1f7b7 100644
--- a/include/guecs/ui.hpp
+++ b/include/guecs/ui.hpp
@@ -25,16 +25,18 @@ namespace guecs {
       std::queue<size_t> free_indices;
     };
 
-  enum class ModBit {
-    NONE=0,
-    hover=1,
-    left=2,
-    right=3
-  };
+  namespace ModBit {
+    enum {
+      NONE=0,
+      hover=1,
+      left=2,
+      right=3
+    };
+  }
 
   using Modifiers = std::bitset<16>;
 
-  constexpr const Modifiers NO_MODS{size_t(ModBit::NONE)};
+  constexpr const Modifiers NO_MODS{0};
 
   struct Clickable {
     /* This is actually called by UI::mouse and passed the entity ID of the