diff --git a/indra/llvfs/tests/lldir_test.cpp b/indra/llvfs/tests/lldir_test.cpp
index 323f876c126924de4f21f7b9e3859377c5cd0c43..3cff622a4bac4091914f43a1220d4eb5d71f5a82 100644
--- a/indra/llvfs/tests/lldir_test.cpp
+++ b/indra/llvfs/tests/lldir_test.cpp
@@ -134,7 +134,7 @@ struct LLDir_Dummy: public LLDir
         return 0;
     }
 
-    virtual BOOL fileExists(const std::string& pathname) const
+    virtual bool fileExists(const std::string& pathname) const
     {
         // Record fileExists() calls so we can check whether caching is
         // working right. Certain LLDir calls should be able to make decisions