diff --git a/.github/copilot-instructions.md b/.github/copilot-instructions.md
index 9c00afe..da126b3 100644
--- a/.github/copilot-instructions.md
+++ b/.github/copilot-instructions.md
@@ -92,6 +92,7 @@ The first response's `[LOADED_DOCS: ...]` prefix must reflect **3 files** (this
 # own-dep-repos: "name: path" — paths are relative to this repo root (.github/..)
 @repo {
   name = "Mango.Nop Libraries"
+  prefix = "MGNOPLIB"
   type = "framework"
   layer = 1
   own-dep-repos = ["AyCode.Core: ../../../../../Aycode/Source/AyCode.Core"]
diff --git a/Mango.Nop.Core/.github/copilot-instructions.md b/Mango.Nop.Core/.github/copilot-instructions.md
index 853d559..f6ee51b 100644
--- a/Mango.Nop.Core/.github/copilot-instructions.md
+++ b/Mango.Nop.Core/.github/copilot-instructions.md
@@ -4,6 +4,7 @@
 
 @repo {
   name = "Mango.Nop.Core"
+  prefix = "MGNOPCORE"
   type = "framework"
   layer = 2
   own-dep-repos = ["AyCode.Core: ../../../../../../Aycode/Source/AyCode.Core"]