diff --git a/include/osmocom/core/utils.h b/include/osmocom/core/utils.h
index 5c660cd..0973b4c 100644
--- a/include/osmocom/core/utils.h
+++ b/include/osmocom/core/utils.h
@@ -118,5 +118,6 @@
 		    bool require_even);
 
 bool osmo_identifier_valid(const char *str);
+bool osmo_separated_identifiers_valid(const char *str, const char *sep_chars);
 
 /*! @} */