diff --git a/CMakeLists.txt b/CMakeLists.txt
index 133f9f82e340801195d711d9f946dc59be64ee1a..c45fa58f30481fdfd5bbed84031370313a36c5f5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -128,6 +128,7 @@ SET(${PROJECT_NAME}_HEADERS
   include/eigenpy/ufunc.hpp
   include/eigenpy/register.hpp
   include/eigenpy/stride.hpp
+  include/eigenpy/swig.hpp
   include/eigenpy/version.hpp
 )
 
diff --git a/include/eigenpy/swig.hpp b/include/eigenpy/swig.hpp
new file mode 100644
index 0000000000000000000000000000000000000000..56f81cbf4723413e75626deeabe094a72417344c
--- /dev/null
+++ b/include/eigenpy/swig.hpp
@@ -0,0 +1,18 @@
+//
+// Copyright (c) 2020 INRIA
+//
+
+#ifndef __eigenpy_swig_hpp__
+#define __eigenpy_swig_hpp__
+
+namespace eigenpy
+{
+  struct PySwigObject
+  {
+    PyObject_HEAD
+    void * ptr;
+    const char * desc;
+  };
+}
+
+#endif // ifndef __eigenpy_swig_hpp__