diff --git a/src/gallium/frontends/wgl/meson.build b/src/gallium/frontends/wgl/meson.build
index c10acc401d2..f8e775774dc 100644
--- a/src/gallium/frontends/wgl/meson.build
+++ b/src/gallium/frontends/wgl/meson.build
@@ -47,7 +47,6 @@ libwgl = static_library(
   ),
   c_args : [
     '-D_GDI32_',             # prevent wgl* being declared __declspec(dllimport)
-    '-DBUILD_GL32',          # declare gl* as __declspec(dllexport) in Mesa headers
     '-DWIN32_LEAN_AND_MEAN', # http://msdn2.microsoft.com/en-us/library/6dwk3a1z.aspx
     _c_args_wgl
   ],