diff --git a/data-util.lua b/data-util.lua
index f6ac2d4..2fa3d78 100644
--- a/data-util.lua
+++ b/data-util.lua
@@ -683,7 +683,7 @@ function util.se_matter(params)
                 {"se-astronomic-science-pack-4", 1},
                 {"se-energy-science-pack-4", 1},
                 {"se-material-science-pack-4", 1},
-                {"matter-tech-card", 1},
+                {"kr-matter-tech-card", 1},
                 {"se-deep-space-science-pack-1", 1},
               }
               
diff --git a/zirconium-recipe.lua b/zirconium-recipe.lua
index 7defd77..b6b7d42 100644
--- a/zirconium-recipe.lua
+++ b/zirconium-recipe.lua
@@ -325,6 +325,8 @@ if mods.bzsilicon then
   synth_i = "silica"
 elseif data.raw.item["sand"] then
   synth_i = "sand"
+elseif data.raw.item["kr-sand"] then
+  synth_i = "kr-sand"
 end
 data:extend({
   {