diff --git a/src/passphrase_callback.hh b/src/passphrase_callback.hh
deleted file mode 100644
index e0f9804..0000000
--- a/src/passphrase_callback.hh
+++ /dev/null
@@ -1,14 +0,0 @@
-#pragma once
-#include <pEp/passphrase_cache.hh>
-
-
-namespace pEp {
-    namespace JNIAdapter {
-
-        char* passphraseRequiredCallback(const PEP_STATUS status);
-
-        template<typename... A> PEP_STATUS passphraseWrap(PEP_STATUS f(PEP_SESSION, A...), PEP_SESSION session, A... a);
-    }
-}
-
-#include "passphrase_callback.hxx"
\ No newline at end of file