diff --git a/UI/Scheduler/UIxCalListingActions.m b/UI/Scheduler/UIxCalListingActions.m
index c02e82a0a..b928ff8af 100644
--- a/UI/Scheduler/UIxCalListingActions.m
+++ b/UI/Scheduler/UIxCalListingActions.m
@@ -492,7 +492,7 @@ static NSArray *tasksFields = nil;
               for (i = 0; i < count; i++)
                 {
                   currentInfo = [newInfoForComponent objectAtIndex: i];
-                  if ([currentInfo respondsToSelector: @selector (stringByEscapingHTMLString)])
+                  if (![currentInfo isEqual:[NSNull null]] && [currentInfo respondsToSelector: @selector (stringByEscapingHTMLString)])
                     [newInfoForComponent replaceObjectAtIndex: i withObject: [currentInfo stringByEscapingHTMLString]];
                 }
               [infos addObject: newInfoForComponent];