diff --git a/libnm-core/nm-core-types.h b/libnm-core/nm-core-types.h
index d1ce6310cd..ce59ec036e 100644
--- a/libnm-core/nm-core-types.h
+++ b/libnm-core/nm-core-types.h
@@ -65,4 +65,7 @@ typedef struct _NMSettingWirelessSecurity NMSettingWirelessSecurity;
 typedef struct _NMSettingWpan             NMSettingWpan;
 typedef struct _NMSimpleConnection        NMSimpleConnection;
 
+NM_AVAILABLE_IN_1_26
+typedef gboolean (*NMUtilsPredicateStr) (const char *str);
+
 #endif  /* __NM_CORE_TYPES_H__ */
diff --git a/libnm-core/nm-utils.c b/libnm-core/nm-utils.c
index be76ead592..bc00516821 100644
--- a/libnm-core/nm-utils.c
+++ b/libnm-core/nm-utils.c
@@ -48,6 +48,20 @@
 
 /*****************************************************************************/
 
+/**
+ * NMUtilsPredicateStr:
+ * @str: the name to check.
+ *
+ * This function takes a string argument and returns either %TRUE or %FALSE.
+ * It is a general purpose predicate, for example used by nm_setting_option_clear_by_name().
+ *
+ * Returns: %TRUE if the predicate function matches.
+ *
+ * Since: 1.26
+ */
+
+/*****************************************************************************/
+
 struct _NMSockAddrEndpoint {
 	const char *host;
 	guint16 port;