diff --git a/src/pEpmodule.hh b/src/pEpmodule.hh
index bbe621e..9c37d4e 100644
--- a/src/pEpmodule.hh
+++ b/src/pEpmodule.hh
@@ -10,10 +10,6 @@ namespace pEp {
 
     void module_free(void *);
 
-    struct module_state {
-        PEP_SESSION session;
-    };
-
     struct PyMethodDef pEpMethods[] = {
         {"about", pEp::PythonAdapter::about, METH_VARARGS, "about p≡p"},
         {NULL, NULL, 0, NULL}