diff --git a/libc/async_safe/include/async_safe/log.h b/libc/async_safe/include/async_safe/log.h
index 10833e4..415b48e 100644
--- a/libc/async_safe/include/async_safe/log.h
+++ b/libc/async_safe/include/async_safe/log.h
@@ -26,8 +26,7 @@
  * SUCH DAMAGE.
  */
 
-#ifndef _ASYNC_SAFE_LOG_LOG_H
-#define _ASYNC_SAFE_LOG_LOG_H
+#pragma once
 
 #include <sys/cdefs.h>
 #include <stdarg.h>
@@ -104,5 +103,3 @@
   } while(0)
 
 __END_DECLS
-
-#endif