diff --git a/src/charon-nm/nm/nm_backend.h b/src/charon-nm/nm/nm_backend.h
index cbc14a091..1ae14627a 100644
--- a/src/charon-nm/nm/nm_backend.h
+++ b/src/charon-nm/nm/nm_backend.h
@@ -28,8 +28,6 @@
 
 /**
  * Initialize the NetworkManager backend.
- *
- * @return		TRUE, if initialization was successful
  */
 void nm_backend_register();
 
diff --git a/src/libstrongswan/plugins/botan/botan_ec_public_key.h b/src/libstrongswan/plugins/botan/botan_ec_public_key.h
index ddb3d5b04..995b55744 100644
--- a/src/libstrongswan/plugins/botan/botan_ec_public_key.h
+++ b/src/libstrongswan/plugins/botan/botan_ec_public_key.h
@@ -22,6 +22,11 @@
  * THE SOFTWARE.
  */
 
+/**
+ * @defgroup botan_ec_public_key botan_ec_public_key
+ * @{ @ingroup botan_p
+ */
+
 #ifndef BOTAN_EC_PUBLIC_KEY_H_
 #define BOTAN_EC_PUBLIC_KEY_H_
 
diff --git a/src/libstrongswan/plugins/botan/botan_ed_public_key.h b/src/libstrongswan/plugins/botan/botan_ed_public_key.h
index 0f44b1afb..17ca0ea29 100644
--- a/src/libstrongswan/plugins/botan/botan_ed_public_key.h
+++ b/src/libstrongswan/plugins/botan/botan_ed_public_key.h
@@ -21,6 +21,11 @@
  * THE SOFTWARE.
  */
 
+/**
+ * @defgroup botan_ed_public_key botan_ed_public_key
+ * @{ @ingroup botan_p
+ */
+
 #ifndef BOTAN_ED_PUBLIC_KEY_H_
 #define BOTAN_ED_PUBLIC_KEY_H_