--- webkit/glue/plugins/plugin_lib.h
+++ webkit/glue/plugins/plugin_lib.h
@@ -34,7 +34,7 @@ class PluginLib : public base::RefCounted<PluginLib> {
   // Returns false if the library couldn't be found, or if it's not a plugin.
   static bool ReadWebPluginInfo(const FilePath& filename, WebPluginInfo* info);
 
-#if defined(OS_LINUX)
+#if defined(OS_NIX)
   // Parse the result of an NP_GetMIMEDescription() call.
   // This API is only used on Linux, and is exposed here for testing.
   static void ParseMIMEDescription(const std::string& description,
diff --git webkit/glue/plugins/plugin_list.h webkit/glue/plugins/plugin_list.h
index ddb30cf..58f0f2f 100644