diff --git a/src/firstboot/firstboot.c b/src/firstboot/firstboot.c
index c452ca5975..af17b527c1 100644
--- a/src/firstboot/firstboot.c
+++ b/src/firstboot/firstboot.c
@@ -97,8 +97,7 @@ static bool press_any_key(void) {
         char k = 0;
         bool need_nl = true;
 
-        printf("-- Press any key to proceed --");
-        fflush(stdout);
+        puts("-- Press any key to proceed --");
 
         (void) read_one_char(stdin, &k, USEC_INFINITY, &need_nl);