1 files changed, 1 insertions, 1 deletions
diff --git a/src/mongo/util/bufreader.h b/src/mongo/util/bufreader.h
index 53f0ba744e2..58257ce011d 100644
--- a/src/mongo/util/bufreader.h
+++ b/src/mongo/util/bufreader.h
@@ -29,7 +29,7 @@ namespace mongo {
         class eof : public std::exception {
         public:
             eof() { }
-            virtual const char * what() { return "BufReader eof"; }
+            virtual const char * what() const throw() { return "BufReader eof"; }
         };
 
         BufReader(const void *p, unsigned len) : _start(p), _pos(p), _end(((char *)_pos)+len) { }