diff --git a/mods/ITEMS/pyutest_blocks/api/signs.lua b/mods/ITEMS/pyutest_blocks/api/signs.lua
index 74a0630..be13288 100644
--- a/mods/ITEMS/pyutest_blocks/api/signs.lua
+++ b/mods/ITEMS/pyutest_blocks/api/signs.lua
@@ -20,6 +20,7 @@ PyuTest.make_sign = function (name, desc, craftitem, texture, groups, extra)
       sounds = PyuTest.make_node_sounds(),
 
       groups = PyuTest.util.tableconcat(groups, {
+          block = 0,
           sign = 1
       }),
       tiles = texture,