diff --git a/spa/include/spa/param/param.h b/spa/include/spa/param/param.h
index d07546599..c649335e2 100644
--- a/spa/include/spa/param/param.h
+++ b/spa/include/spa/param/param.h
@@ -106,6 +106,11 @@ enum spa_param_profile {
 	SPA_PARAM_PROFILE_priority,	/**< profile priority (Int) */
 	SPA_PARAM_PROFILE_available,	/**< availability of the profile
 					  *  (Id enum spa_param_availability) */
+	SPA_PARAM_PROFILE_classes,	/**< node classes provided by this profile
+					  *  (Struct(
+					  *        Struct(
+					  *           String : class name (eg. "Audio/Source"),
+					  *           Int : number of nodes)*)) */
 };
 
 enum spa_param_port_config_mode {
diff --git a/spa/include/spa/param/type-info.h b/spa/include/spa/param/type-info.h
index 304283db6..756325c60 100644
--- a/spa/include/spa/param/type-info.h
+++ b/spa/include/spa/param/type-info.h
@@ -288,6 +288,7 @@ static const struct spa_type_info spa_type_param_profile[] = {
 	{ SPA_PARAM_PROFILE_description, SPA_TYPE_String, SPA_TYPE_INFO_PARAM_PROFILE_BASE "description", NULL },
 	{ SPA_PARAM_PROFILE_priority, SPA_TYPE_Int, SPA_TYPE_INFO_PARAM_PROFILE_BASE "priority", NULL },
 	{ SPA_PARAM_PROFILE_available, SPA_TYPE_Id, SPA_TYPE_INFO_PARAM_PROFILE_BASE "available", spa_type_param_availability, },
+	{ SPA_PARAM_PROFILE_classes, SPA_TYPE_Struct, SPA_TYPE_INFO_PARAM_PROFILE_BASE "classes", NULL, },
 	{ 0, 0, NULL, NULL },
 };