diff --git a/includes/std/attrs.pat b/includes/std/attrs.pat
index f5ad8a3..9a0a643 100644
--- a/includes/std/attrs.pat
+++ b/includes/std/attrs.pat
@@ -1,3 +1,5 @@
+#pragma once
+
 import std.io;
 import std.core;
 
@@ -67,4 +69,4 @@ namespace auto std::attr {
     struct Sealed {}
     [[sealed]];
 
-}
\ No newline at end of file
+}
diff --git a/includes/type/base64.pat b/includes/type/base64.pat
index 5f4f171..6622f57 100644
--- a/includes/type/base64.pat
+++ b/includes/type/base64.pat
@@ -1,3 +1,4 @@
+#pragma once
 import std.io;
 import std.string;
 import std.mem;
diff --git a/includes/type/magic.pat b/includes/type/magic.pat
index 64b8517..f26a541 100644
--- a/includes/type/magic.pat
+++ b/includes/type/magic.pat
@@ -1,3 +1,5 @@
+#pragma once
+
 import std.string;
 import std.sys;
 import std.io;
@@ -42,4 +44,4 @@ namespace auto type
             return std::format("\"{}\"", type::escape_bytes(magic.value));
         };
     }
-}
\ No newline at end of file
+}
diff --git a/includes/type/path.pat b/includes/type/path.pat
index 2edd522..bcde392 100644
--- a/includes/type/path.pat
+++ b/includes/type/path.pat
@@ -1,3 +1,5 @@
+#pragma once
+
 import std.mem;
 
 /*!
diff --git a/includes/type/size.pat b/includes/type/size.pat
index f2231d0..8c8aa02 100644
--- a/includes/type/size.pat
+++ b/includes/type/size.pat
@@ -1,3 +1,5 @@
+#pragma once
+
 import std.io;
 
 /*!
@@ -69,4 +71,4 @@ namespace auto type {
 
     }
 
-}
\ No newline at end of file
+}