diff --git a/build/bakefiles/common.bkl b/build/bakefiles/common.bkl
index 6c569a9552..46e8a418e6 100644
--- a/build/bakefiles/common.bkl
+++ b/build/bakefiles/common.bkl
@@ -204,7 +204,7 @@
         <if cond="FORMAT!='autoconf' and DEBUG_FLAG=='1'">__WXDEBUG__</if>
     </set>
     <set var="UNICODE_DEFINE">
-        <if cond="FORMAT!='autoconf' and UNICODE=='1'">wxUSE_UNICODE=1</if>
+        <if cond="FORMAT!='autoconf' and UNICODE=='1'">_UNICODE</if>
     </set>
     
     <set var="UNICOWS_LIB">