diff --git a/api.lua b/api.lua
index 4fe2339..f9f0076 100644
--- a/api.lua
+++ b/api.lua
@@ -172,11 +172,13 @@ function internal.register_dripstone_flavor(flavor, def)
 	-- full, and the structure simply waits for a dripstone node to grow.
 	-- This behaviour is designed to be easy to override. (For example: if
 	-- you want a HEAVY watered dripstone type that holds 2 droplets.)
-	internal.register_droplet_catcher(
-		trickl,
-		internal.size_to_name(flavor, 1),
-		internal.size_to_name(flavor, 1)
-	)
+	if trickl then
+		internal.register_droplet_catcher(
+			trickl,
+			internal.size_to_name(flavor, 1),
+			internal.size_to_name(flavor, 1)
+		)
+	end
 
 	-- Allow spike stalagmites to catch droplets.
 	-- This feature can override the former safeguard.