diff --git a/ChangeLog b/ChangeLog
index ab83cbd4b..b3a08addd 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2012-04-16  Jean Raby  <jraby@inverse.ca>
+
+	* SOPE/NGCards/iCalMonthlyRecurrenceCalculator.m
+	(-recurrenceRangesWithinCalendarDateRange:):
+	Fix of by one error. (bug #1772)
+
 2012-04-16  Wolfgang Sourdeau  <wsourdeau@inverse.ca>
 
 	* SoObjects/SOGo/NSString+Utilities.m (-encryptWithKey:)
diff --git a/SOPE/NGCards/iCalMonthlyRecurrenceCalculator.m b/SOPE/NGCards/iCalMonthlyRecurrenceCalculator.m
index aac5532ff..67be4069a 100644
--- a/SOPE/NGCards/iCalMonthlyRecurrenceCalculator.m
+++ b/SOPE/NGCards/iCalMonthlyRecurrenceCalculator.m
@@ -247,7 +247,7 @@ static inline unsigned iCalDoWForNSDoW (int dow)
   if (byMonth && [byMonth count] > 0)
      {
        int i;
-       for (i = 0; i <= 12; i++)
+       for (i = 0; i < 12; i++)
  	byMonthList[i] = [byMonth containsObject: [NSString stringWithFormat: @"%i", i + 1]];
      }