diff --git a/IkiWiki/Plugin/calendar.pm b/IkiWiki/Plugin/calendar.pm
index f0ac9acf9..3d10b1e2e 100644
--- a/IkiWiki/Plugin/calendar.pm
+++ b/IkiWiki/Plugin/calendar.pm
@@ -193,7 +193,7 @@ sub gencalendaryear {
 		}
 
 		# Filling potential gaps in years (e.g. calendar goes from 2010 to 2014,
-		# and we just added year 2005. We have to had years 2006 to 2009).
+		# and we just added year 2005. We have to add years 2006 to 2009).
 		return if $params{norecurse};
 		if ($wikistate{calendar}{minyear} > $year) {
 			foreach my $other ($year + 1 .. $wikistate{calendar}{minyear} - 1) {
diff --git a/doc/plugins/calendar.mdwn b/doc/plugins/calendar.mdwn
index d55c21a62..8d18ed081 100644
--- a/doc/plugins/calendar.mdwn
+++ b/doc/plugins/calendar.mdwn
@@ -17,12 +17,12 @@ pages from templates (overriding the existing ones).
 * `calendar_autocreate` - Control whether new archive pages are created as
   needed. It defaults to being done only if option `archivebase` is set.
 * `calendar_fill_gaps` - If set (and `calendar_autocreate` is set as well),
-  build calendar pages of emty years and months (but does not build pages older
+  build calendar pages of empty years and months (but does not build pages older
   than the older page, and younger than the younger page of the pagespec). If
-  not, thoses empty calendar pages will be skipped. *Please note:*
+  not, those empty calendar pages will be skipped. *Please note:*
   * The archive pages will not be automatically updated if this option changes.
     It is up to the user to delete relevant pages, and rebuild the wiki.
-  * When `calendar_fill_gaps` is set, and post is deleted, making the
+  * When `calendar_fill_gaps` is set, and a post is deleted, making the
     corresponding year/month empty, the corresponding page is left, and shows
     an empty calendar. This is on purpose, not to break any external link
     pointing to this particular page. If you do not like it, delete the