diff --git a/openbsd-compat/readpassphrase.c b/openbsd-compat/readpassphrase.c
index 5138b4034..eb060bdbf 100644
--- a/openbsd-compat/readpassphrase.c
+++ b/openbsd-compat/readpassphrase.c
@@ -138,7 +138,7 @@ restart:
 
 	/* Restore old terminal settings and signals. */
 	if (memcmp(&term, &oterm, sizeof(term)) != 0) {
-		while (tcsetattr(input, TCSANOW|TCSASOFT, &oterm) == -1 &&
+		while (tcsetattr(input, _T_FLUSH, &oterm) == -1 &&
 		    errno == EINTR)
 			continue;
 	}