diff --git a/include/osmocom/core/logging.h b/include/osmocom/core/logging.h
index 1e79dab..617d78e 100644
--- a/include/osmocom/core/logging.h
+++ b/include/osmocom/core/logging.h
@@ -224,6 +224,7 @@
 enum log_filename_type {
 	LOG_FILENAME_NONE,
 	LOG_FILENAME_PATH,
+	LOG_FILENAME_BASENAME,
 };
 
 /*! structure representing a logging target */