diff --git a/build/bakefiles/tiff.bkl b/build/bakefiles/tiff.bkl
index fd5eb86742..8ce3c3a3fd 100644
--- a/build/bakefiles/tiff.bkl
+++ b/build/bakefiles/tiff.bkl
@@ -30,7 +30,7 @@
         <if cond="PLATFORM_MACOSX=='1'">src/tiff/tif_unix.c</if>
         <if cond="PLATFORM_OS2=='1'">src/tiff/tif_unix.c</if>
         <if cond="PLATFORM_WIN32=='1'">src/tiff/tif_win32.c</if>
-        <if cond="PLATFORM_MAC=='1'">src/tiff/tif_apple.c</if>
+        <if cond="PLATFORM_MACOS=='1'">src/tiff/tif_apple.c</if>
     </set>
     
     <lib id="wxtiff" template="3rdparty_lib"