diff --git a/data/json/requirements/cooking_tools.json b/data/json/requirements/cooking_tools.json
index c5bd2d3b16e9..6a32021bd5e0 100644
--- a/data/json/requirements/cooking_tools.json
+++ b/data/json/requirements/cooking_tools.json
@@ -49,7 +49,8 @@
         [ "toolset", 1 ],
         [ "coffeemaker", 1 ],
         [ "atomic_coffeepot", -1 ],
-        [ "fire", -1 ]
+        [ "fire", -1 ],
+        [ "knife_heat", -1 ]
       ]
     ]
   }
diff --git a/data/mods/Aftershock/recipes/requirements.json b/data/mods/Aftershock/recipes/requirements.json
index 630b4a080d5e..d5835226a119 100644
--- a/data/mods/Aftershock/recipes/requirements.json
+++ b/data/mods/Aftershock/recipes/requirements.json
@@ -27,7 +27,8 @@
         [ "coffeemaker", 1 ],
         [ "atomic_coffeepot", -1 ],
         [ "afs_atompot", -1 ],
-        [ "fire", -1 ]
+        [ "fire", -1 ],
+        [ "knife_heat", -1 ]
       ]
     ]
   }