diff --git a/src/libraries/turtle/expectation.hpp b/src/libraries/turtle/expectation.hpp
index b63cfeb..4c2aa62 100644
--- a/src/libraries/turtle/expectation.hpp
+++ b/src/libraries/turtle/expectation.hpp
@@ -14,7 +14,6 @@
 #include "action.hpp"
 #include "sequence.hpp"
 #include "check.hpp"
-#include "constraints.hpp"
 #include <boost/shared_ptr.hpp>
 #include <boost/preprocessor/repetition/repeat_from_to.hpp>
 #include <boost/preprocessor/repetition/enum_params.hpp>