diff --git a/mods/HELP/doc/doc_identifier/init.lua b/mods/HELP/doc/doc_identifier/init.lua
index 8ba005f3c2..b326a39529 100644
--- a/mods/HELP/doc/doc_identifier/init.lua
+++ b/mods/HELP/doc/doc_identifier/init.lua
@@ -169,6 +169,7 @@ minetest.register_tool("doc_identifier:identifier_solid", {
 	_doc_items_hidden = false,
 	tool_capabilities = {},
 	range = 10,
+	groups = { disable_repair = 1 },
 	wield_image = "doc_identifier_identifier.png",
 	inventory_image = "doc_identifier_identifier.png",
 	liquids_pointable = false,
@@ -181,7 +182,7 @@ minetest.register_tool("doc_identifier:identifier_liquid", {
 	_doc_items_create_entry = false,
 	tool_capabilities = {},
 	range = 10,
-	groups = { not_in_creative_inventory = 1, not_in_craft_guide = 1 },
+	groups = { not_in_creative_inventory = 1, not_in_craft_guide = 1, disable_repair=1 },
 	wield_image = "doc_identifier_identifier_liquid.png",
 	inventory_image = "doc_identifier_identifier_liquid.png",
 	liquids_pointable = true,
diff --git a/mods/ITEMS/mcl_clock/init.lua b/mods/ITEMS/mcl_clock/init.lua
index 98b8b66e31..c5a87e5b6a 100644
--- a/mods/ITEMS/mcl_clock/init.lua
+++ b/mods/ITEMS/mcl_clock/init.lua
@@ -63,7 +63,7 @@ function watch.register_item(name, image, creative, frame)
 		_doc_items_longdesc = longdesc,
 		_doc_items_usagehelp = usagehelp,
 		inventory_image = image,
-		groups = {not_in_creative_inventory=g, tool=1, clock=frame},
+		groups = {not_in_creative_inventory=g, tool=1, clock=frame, disable_repair=1},
 		wield_image = "",
 		stack_max = 64,
 	})
diff --git a/mods/ITEMS/mcl_compass/init.lua b/mods/ITEMS/mcl_compass/init.lua
index ce0dac690b..a07d58ffd3 100644
--- a/mods/ITEMS/mcl_compass/init.lua
+++ b/mods/ITEMS/mcl_compass/init.lua
@@ -90,7 +90,7 @@ for i,img in ipairs(images) do
 		inventory_image = img,
 		wield_image = img,
 		stack_max = 64,
-		groups = {not_in_creative_inventory=inv, compass=i, tool=1}
+		groups = {not_in_creative_inventory=inv, compass=i, tool=1, disable_repair=1}
 	})
 
 	-- Help aliases. Makes sure the lookup tool works correctly