diff --git a/sys/kern/subr_fattime.c b/sys/kern/subr_fattime.c
index 1fb207ed9f99..fd25d56f7ecf 100644
--- a/sys/kern/subr_fattime.c
+++ b/sys/kern/subr_fattime.c
@@ -49,7 +49,7 @@
  * "New Technology".  Anyway...
  *
  * The 'utc' argument determines if the resulting FATTIME timestamp
- * should b on the UTC or local timezone calendar.
+ * should be on the UTC or local timezone calendar.
  *
  * The conversion functions below cut time into four-year leap-second
  * cycles rather than single years and uses table lookups inside those