diff --git a/ClassicalSharp/Generator/NotchyGenerator.cs b/ClassicalSharp/Generator/NotchyGenerator.cs
index 7589c5e8e..658b76d8e 100644
--- a/ClassicalSharp/Generator/NotchyGenerator.cs
+++ b/ClassicalSharp/Generator/NotchyGenerator.cs
@@ -263,7 +263,7 @@ namespace ClassicalSharp.Generator {
 		}
 		
 		void PlantMushrooms() {
-			int numPatches = width * length / 2000;
+			int numPatches = width * length * height / 2000;
 			CurrentState = "Planting mushrooms";
 			
 			for (int i = 0; i < numPatches; i++) {
@@ -389,4 +389,4 @@ namespace ClassicalSharp.Generator {
 			}
 		}
 	}
-}
\ No newline at end of file
+}