diff --git a/changelog.txt b/changelog.txt
index 82a0d5e5..95db9152 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -4,6 +4,7 @@ Date: ???
   Changes:
     - Fix crash in beacon migration. Resolves https://github.com/pyanodon/pybugreports/issues/1515
     - Fixed a crash when blueprinting inserters after another mod has edited the blueprint. Resolves https://github.com/pyanodon/pybugreports/issues/1526
+    - Fixed missing prototype reference in programmable inserters. Resolves https://github.com/pyanodon/pybugreports/issues/1523
 ---------------------------------------------------------------------------------------------------
 Version: 3.1.2
 Date: 2026-07-09
diff --git a/data.lua b/data.lua
index 357da388..2fbd1761 100644
--- a/data.lua
+++ b/data.lua
@@ -168,6 +168,9 @@ require "prototypes/menu-simulations"
 -- sprites
 require "prototypes/sprites/sprites"
 
+-- util entities
+require "prototypes/util"
+
 data.raw["utility-constants"].default.main_menu_background_image_location = "__pycoalprocessinggraphics__/graphics/pycp-wall.jpg"
 
 -- adding fuel value to liquids
diff --git a/prototypes/util.lua b/prototypes/util.lua
new file mode 100644
index 00000000..b4dbd5d2
--- /dev/null
+++ b/prototypes/util.lua
@@ -0,0 +1,27 @@
+-- for all of those internal entities that dont really fit anywhere else
+
+data:extend{
+    {
+        type = "proxy-container",
+        name = "py-dynamic-inserter-target",
+        icon = util.empty_icon().icon,
+        draw_inventory_content = false,
+        collision_mask = {layers = {}},
+        selection_box = {{-0.25, -0.25}, {0.25, 0.25}},
+        flags = {
+            "not-rotatable",
+            "placeable-neutral",
+            "placeable-off-grid",
+            "not-repairable",
+            "not-on-map",
+            "not-deconstructable",
+            "not-blueprintable",
+            "hide-alt-info",
+            "not-upgradable"
+        },
+        allow_copy_paste = false,
+        selectable_in_game = false,
+        hidden = true,
+        hidden_in_factoriopedia = true
+    }
+}
\ No newline at end of file