diff --git a/include/osmocom/core/logging.h b/include/osmocom/core/logging.h
index 7b28b2c8a..41a5d775f 100644
--- a/include/osmocom/core/logging.h
+++ b/include/osmocom/core/logging.h
@@ -102,7 +102,11 @@ void logp(int subsys, const char *file, int line, int cont, const char *format,
 #define DLSTATS		-10	/*!< Statistics */
 #define DLGSUP		-11	/*!< Generic Subscriber Update Protocol */
 #define DLOAP		-12	/*!< Osmocom Authentication Protocol */
-#define OSMO_NUM_DLIB	12	/*!< Number of logging sub-systems in libraries */
+#define DLSS7		-13	/*!< Osmocom SS7 */
+#define DLSCCP		-14	/*!< Osmocom SCCP */
+#define DLSUA		-15	/*!< Osmocom SUA */
+#define DLM3UA		-16	/*!< Osmocom M3UA */
+#define OSMO_NUM_DLIB	16	/*!< Number of logging sub-systems in libraries */
 
 /*! Configuration of singgle log category / sub-system */
 struct log_category {