diff --git a/mrbgems/mruby-time/src/time.c b/mrbgems/mruby-time/src/time.c
index 2a2aabe72..8b797f047 100644
--- a/mrbgems/mruby-time/src/time.c
+++ b/mrbgems/mruby-time/src/time.c
@@ -105,7 +105,7 @@ static const char *mon_names[] = {
 };
 
 static const char *wday_names[] = {
-  "Sun", "Mon", "Tus", "Wed", "Thu", "Fri", "Sat",
+  "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat",
 };
 
 struct mrb_time {