diff --git a/rules.ini b/rules.ini
index d7178e7ab..ea402420d 100644
--- a/rules.ini
+++ b/rules.ini
@@ -200,6 +200,7 @@ Unity[] = (?:^|/)globalgamemanagers\.assets$
 Unreal[] = (?:^|/)Engine/Shaders/Binaries/
 Unreal[] = (?:^|/)Engine/Binaries/ThirdParty/
 Unreal[] = (?:^|/)UnrealEd\.
+Unreal[] = *.upk$
 Virtools = (?:^|/)CKDX[7-9]Rasterizer\.dll$
 Vision = (?:^|/)vision(?:71|80|90|100)?\.dll$
 VisionaireStudio = (?:^|/)VisionaireConfigurationTool\.exe(?:$|/)
diff --git a/tests/types/Engine.Unreal.txt b/tests/types/Engine.Unreal.txt
index 118537a50..8622916fd 100644
--- a/tests/types/Engine.Unreal.txt
+++ b/tests/types/Engine.Unreal.txt
@@ -12,3 +12,5 @@ Engine/Binaries/ThirdParty/PhysX/APEX-1.3/Win64/VS2015
 Engine/Binaries/ThirdParty/Steamworks
 Engine/Binaries/ThirdParty/Steamworks/Steamv137/Win64/steam_api64.dll
 UnrealEd.
+UnrealEngine3/MarsGame/CookedPCClient/EditorMaterials.upk
+.upk