diff --git a/amalgamate.py b/amalgamate.py
index 232f739..2ac22b8 100644
--- a/amalgamate.py
+++ b/amalgamate.py
@@ -70,11 +70,15 @@ def main():
     with open("out/LICENSE", "w") as f:
         f.write(license)
     out_path = "out/phnt.h"
-    exec(f"\"{cpp_amalgamate}\" -d systeminformer/phnt/include phnt_amalgamate.h -o \"{out_path}\"")
-    with open(out_path, "r") as f:
-        header = f.read()
-    with open(out_path, "w") as f:
-        f.write("/*\n\n")
+    exec(f"\"{cpp_amalgamate}\" -d systeminformer/phnt/include phnt_amalgamate.h -o \"{out_path}\"")
+    with open(out_path, "r") as f:
+        header = f.read()
+    header = header.replace(
+        "#if __has_include (",
+        "#if 1 // __has_include ("
+    )
+    with open(out_path, "w") as f:
+        f.write("/*\n\n")
         f.write("+===========================================================+\n")
         f.write("|           THIS FILE WAS AUTOMATICALLY GENERATED           |\n")
         f.write("+===========================================================+\n")