diff --git a/include/osmocom/core/logging.h b/include/osmocom/core/logging.h
index 1c159d0..290b33d 100644
--- a/include/osmocom/core/logging.h
+++ b/include/osmocom/core/logging.h
@@ -198,6 +198,7 @@
 	   int line, int cont, const char *format, ...)
 				__attribute__ ((format (printf, 6, 7)));
 int log_init(const struct log_info *inf, void *talloc_ctx);
+int log_check_level(int subsys, unsigned int level);
 
 /* context management */
 void log_reset_context(void);