1 files changed, 6 insertions, 1 deletions

diff --git a/src/lib/libcrypto/idea/idea_local.h b/src/lib/libcrypto/idea/idea_local.h
index c7fd3271a7..c0a592ab1c 100644
--- a/src/lib/libcrypto/idea/idea_local.h
+++ b/src/lib/libcrypto/idea/idea_local.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: idea_local.h,v 1.2 2023/07/07 12:51:58 beck Exp $ */
+/* $OpenBSD: idea_local.h,v 1.3 2025/11/26 10:19:57 tb Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -56,6 +56,9 @@
  * [including the GNU Public Licence.]
  */
 
+#ifndef HEADER_IDEA_LOCAL_H
+#define HEADER_IDEA_LOCAL_H
+
 /* The new form of this macro (check if the a*b == 0) was suggested by
  * Colin Plumb <colin@nyx10.cs.du.edu> */
 /* Removal of the inner if from from Wei Dai 24/4/96 */
@@ -147,3 +150,5 @@ else									\
         ul=x2^t0; /* do the swap to x3 */                               \
         x2=x3^t1;                                                       \
         x3=ul;
+
+#endif /* HEADER_IDEA_LOCAL_H */