X-Git-Url: https://sipb.mit.edu/gitweb.cgi/ikiwiki.git/blobdiff_plain/c8cb931890cb9ff614683eef27fc0bfeb308d8bd..1405006fbf8d78e3f629c60a98e01b5254de414e:/IkiWiki/Plugin/calendar.pm

diff --git a/IkiWiki/Plugin/calendar.pm b/IkiWiki/Plugin/calendar.pm
index 4bb4c2c21..aed087eed 100644
--- a/IkiWiki/Plugin/calendar.pm
+++ b/IkiWiki/Plugin/calendar.pm
@@ -390,7 +390,8 @@ sub needsbuild (@) { #{{{
 				# the current day
 				push @$needsbuild, $pagesources{$page};
 			}
-			if (grep { $_ eq $pagesources{$page} } @$needsbuild) {
+			if (exists $pagesources{$page} && 
+			    grep { $_ eq $pagesources{$page} } @$needsbuild) {
 				# remove state, will be re-added if
 				# the calendar is still there during the
 				# rebuild