diff --git a/casadi-bindings-internal.cabal b/casadi-bindings-internal.cabal
--- a/casadi-bindings-internal.cabal
+++ b/casadi-bindings-internal.cabal
@@ -1,5 +1,5 @@
 name:                casadi-bindings-internal
-version:             0.1
+version:             0.1.1
 license:             LGPL-3
 license-file:        LICENSE
 category:            Numerical, Math
diff --git a/cbits/callback.cpp b/cbits/callback.cpp
--- a/cbits/callback.cpp
+++ b/cbits/callback.cpp
@@ -1,5 +1,5 @@
 #include <iostream>
-#include "casadi/core/casadi.hpp"
+#include "casadi/core/core.hpp"
 #include "casadi/core/function/custom_function.hpp"
 #include "casadi/core/functor_internal.hpp"