diff --git a/util/file_allocator.h b/util/file_allocator.h
index e81de1834a6..04b6a806556 100644
--- a/util/file_allocator.h
+++ b/util/file_allocator.h
@@ -108,7 +108,7 @@ namespace mongo {
         }
 
         mutable boost::mutex pendingMutex_;
-        mutable boost::condition_variable pendingUpdated_;
+        mutable boost::condition pendingUpdated_;
         list< string > pending_;
         mutable map< string, int > pendingSize_;
         
@@ -187,4 +187,4 @@ namespace mongo {
     
     FileAllocator &theFileAllocator();
     
-} // namespace mongo
\ No newline at end of file
+} // namespace mongo