diff --git a/src/libraries/turtle/function.hpp b/src/libraries/turtle/function.hpp
index bc2d161..e5d96f9 100644
--- a/src/libraries/turtle/function.hpp
+++ b/src/libraries/turtle/function.hpp
@@ -193,7 +193,8 @@ namespace mock
             virtual void reset()
             {
                 valid_ = true;
-                boost::shared_ptr< function_impl > guard = shared_from_this();
+                boost::shared_ptr< function_impl > guard =
+                    this->shared_from_this();
                 expectations_.clear();
             }