diff --git a/vlib/readline/readline_windows.c.v b/vlib/readline/readline_windows.c.v
index be10d6cc2a..3fefc80fc8 100644
--- a/vlib/readline/readline_windows.c.v
+++ b/vlib/readline/readline_windows.c.v
@@ -36,6 +36,7 @@ pub fn (mut r Readline) read_line_utf8(prompt string) ![]rune {
 		r.previous_lines[0] = []rune{}
 	}
 	print(r.prompt)
+	unsafe { C.fflush(C.stdout) }
 	r.current = os.get_raw_line().runes()
 	r.previous_lines[0] = []rune{}
 	r.search_index = 0