diff --git a/api.txt b/api.txt
index 077cf6a..9c41f8f 100644
--- a/api.txt
+++ b/api.txt
@@ -881,6 +881,7 @@ mobs.node_sound_ice_defaults()
 mobs.node_sound_metal_defaults()
 mobs.node_sound_water_defaults()
 mobs.node_sound_snow_defaults()
+mobs.node_sound_glass_defaults()
 
 
 Rideable Horse Example Mob
diff --git a/crafts.lua b/crafts.lua
index 539c52d..91b824d 100644
--- a/crafts.lua
+++ b/crafts.lua
@@ -23,6 +23,7 @@ sound_helper("node_sound_ice_defaults")
 sound_helper("node_sound_metal_defaults")
 sound_helper("node_sound_water_defaults")
 sound_helper("node_sound_snow_defaults")
+sound_helper("node_sound_glass_defaults")
 
 -- helper function to add {eatable} group to food items