diff --git a/include/wx/aui/framemanager.h b/include/wx/aui/framemanager.h
index b77df0929d..a0a78ef8f0 100644
--- a/include/wx/aui/framemanager.h
+++ b/include/wx/aui/framemanager.h
@@ -539,7 +539,7 @@ protected:
 
     wxFrame* m_hint_wnd;         // transparent hint window, if supported by platform
     wxTimer m_hint_fadetimer;    // transparent fade timer
-    int m_hint_fadeamt;          // transparent fade amount
+    wxByte m_hint_fadeamt;       // transparent fade amount
 
 #ifndef SWIG
     DECLARE_EVENT_TABLE()
diff --git a/src/aui/framemanager.cpp b/src/aui/framemanager.cpp
index 945d2d8c35..2ef35747dd 100644
--- a/src/aui/framemanager.cpp
+++ b/src/aui/framemanager.cpp
@@ -2479,7 +2479,7 @@ void wxFrameManager::ShowHint(const wxRect& rect)
             return;
         m_last_hint = rect;
 
-        int initial_fade = 50;
+        wxByte initial_fade = 50;
         if (m_flags & wxAUI_MGR_TRANSPARENT_HINT_FADE)
             initial_fade = 0;