diff --git a/Source/Integration/LuprexViewportClient.h b/Source/Integration/LuprexViewportClient.h
index 286bd54c..9b388f0b 100644
--- a/Source/Integration/LuprexViewportClient.h
+++ b/Source/Integration/LuprexViewportClient.h
@@ -14,6 +14,7 @@
 
 #include "CoreMinimal.h"
 #include "Engine/GameViewportClient.h"
+#include "Layout/WidgetPath.h"
 #include "LuprexViewportClient.generated.h"
 
 UCLASS()
diff --git a/build.py b/build.py
index 01c31c7b..c4f2c6af 100755
--- a/build.py
+++ b/build.py
@@ -309,7 +309,7 @@ def build_compile_commands_from_luprex():
         parts = line.split()
         if (parts[0] == "g++") and ("-c" in parts):
             source = os.path.abspath(os.path.join(INTEGRATION, parts[-1]))
-            entries.append({ "file": source, "command": line, "directory": INTEGRATION })
+            entries.append({ "file": source, "command": line.replace("g++ ", "g++ -D__INTELLISENSE__ ", 1), "directory": INTEGRATION })
     return entries
 
 
@@ -349,7 +349,7 @@ def build_compile_commands_from_integration():
     ccdir = f"{UNREALENGINE}/Engine/Source"
     for cpp in sorted(cpp_to_rsp.keys()):
         rsp = cpp_to_rsp[cpp]
-        args = [clang, "@"+rsp]
+        args = [clang, "-D__INTELLISENSE__", "@"+rsp]
         entries.append({ "file": cpp, "arguments": args, "directory": ccdir })
     return entries