diff --git a/src/msw/tbar95.cpp b/src/msw/tbar95.cpp
index 0a8217a9dd..af6e2fae7f 100644
--- a/src/msw/tbar95.cpp
+++ b/src/msw/tbar95.cpp
@@ -94,6 +94,9 @@
 #ifndef TBSTYLE_FLAT
     #define TBSTYLE_LIST            0x1000
     #define TBSTYLE_FLAT            0x0800
+#endif
+
+#ifndef TBSTYLE_TRANSPARENT
     #define TBSTYLE_TRANSPARENT     0x8000
 #endif