1 files changed, 2 insertions, 2 deletions
diff --git a/e_os.h b/e_os.h
index 6cd7476296..6ae3b2cca1 100644
--- a/e_os.h
+++ b/e_os.h
@@ -7,8 +7,8 @@
  * https://www.openssl.org/source/license.html
  */
 
-#ifndef HEADER_E_OS_H
-# define HEADER_E_OS_H
+#ifndef OSSL_E_OS_H
+# define OSSL_E_OS_H
 
 # include <limits.h>
 # include <openssl/opensslconf.h>