diff --git a/stones.lua b/stones.lua
index bd72d01..22a7f91 100644
--- a/stones.lua
+++ b/stones.lua
@@ -152,7 +152,6 @@ local function reg(name, basename, basedef)
         groups = {
             snappy = 1,
             falling_node = 1,
-            falling_repose = 1,
             go_territory_marker = 1,
             stack_as_node = 1,
         },