2 files changed, 8 insertions, 2 deletions
diff --git a/tools/libmkfs/mkfs.h b/tools/libmkfs/mkfs.h
index d5efae14..40d63b26 100644
--- a/tools/libmkfs/mkfs.h
+++ b/tools/libmkfs/mkfs.h
@@ -4,7 +4,8 @@
 
 ======================================== */
 
-#pragma once
+#ifndef LIBMKFS_MKFS_H
+#define LIBMKFS_MKFS_H
 
 #include <tools/rang.h>
 #include <iostream>
@@ -88,3 +89,5 @@ inline auto console_out() -> std::ostream& {
   return conout;
 }
 }  // namespace mkfs
+
+#endif
diff --git a/tools/libmkfs/openhefs.h b/tools/libmkfs/openhefs.h
index fcfd9d23..b729894c 100644
--- a/tools/libmkfs/openhefs.h
+++ b/tools/libmkfs/openhefs.h
@@ -4,7 +4,8 @@
 
 ======================================== */
 
-#pragma once
+#ifndef LIBMKFS_OPENHEFS_H
+#define LIBMKFS_OPENHEFS_H
 
 #include <cstdint>
 #include <cstring>
@@ -114,3 +115,5 @@ struct __attribute__((packed)) BootNode {
   char          pad[272]{};
 };
 }  // namespace mkfs::hefs
+
+#endif