diff --git a/src/libcharon/plugins/tnccs_20/messages/pb_reason_string_msg.c b/src/libcharon/plugins/tnccs_20/messages/pb_reason_string_msg.c
index 6e05c5033..e361cf2b2 100644
--- a/src/libcharon/plugins/tnccs_20/messages/pb_reason_string_msg.c
+++ b/src/libcharon/plugins/tnccs_20/messages/pb_reason_string_msg.c
@@ -36,7 +36,7 @@ typedef struct private_pb_reason_string_msg_t private_pb_reason_string_msg_t;
  */
 
 /**
- * Private data of a private_pb_reason_string_msg_t object.
+ * Private data of a pb_reason_string_msg_t object.
  *
  */
 struct private_pb_reason_string_msg_t {