diff --git a/Source/Platform.h b/Source/Platform.h
index 0c98a3bb..b339cef1 100644
--- a/Source/Platform.h
+++ b/Source/Platform.h
@@ -433,7 +433,6 @@ typedef WORD LANGID;
 
 #  define DS_FIXEDSYS 8
 #  define DS_SETFONT 64
-#  define DS_SHELLFONT (DS_SETFONT | DS_FIXEDSYS)
 
 #  define WS_EX_RIGHT 0x1000
 #  define WS_EX_RIGHTSCROLLBAR 0
@@ -444,6 +443,10 @@ typedef WORD LANGID;
 #  define PBS_SMOOTH 1
 #endif
 
+#ifndef DS_SHELLFONT
+#  define DS_SHELLFONT (DS_SETFONT | DS_FIXEDSYS)
+#endif
+
 // brush styles
 
 #ifndef BS_SOLID