diff --git a/include/errcode.h b/include/errcode.h
index b8ab06586f9e..99e053149648 100644
--- a/include/errcode.h
+++ b/include/errcode.h
@@ -1,5 +1,5 @@
-#ifndef TARANTOOL_ERRCODE_H
-#define TARANTOOL_ERRCODE_H
+#ifndef TARANTOOL_ERRCODE_H_INCLUDED
+#define TARANTOOL_ERRCODE_H_INCLUDED
 /*
  * Redistribution and use in source and binary forms, with or
  * without modification, are permitted provided that the following
@@ -145,4 +145,4 @@ static inline const char *tnt_errcode_desc(uint32_t errcode)
 }
 
 
-#endif /* TARANTOOL_ERRCODE_H */
+#endif /* TARANTOOL_ERRCODE_H_INCLUDED */
diff --git a/src/say.m b/src/say.m
index 0fe923b16b5e..9a2de26bcd58 100644
--- a/src/say.m
+++ b/src/say.m
@@ -168,10 +168,12 @@
 void
 _say(int level, const char *filename, int line, const char *error, const char *format, ...)
 {
+	int errsv = errno; /* Preserve the errno. */
         if (cfg.log_level < level)
 		return;
 	va_list ap;
 	va_start(ap, format);
 	vsay(level, filename, line, error, format, ap);
 	va_end(ap);
+	errno = errsv; /* Preserve the errno. */
 }