diff --git a/libreplan-webapp/src/main/java/org/libreplan/ws/calendarexceptiontypes/impl/CalendarExceptionTypeColorConverter.java b/libreplan-webapp/src/main/java/org/libreplan/ws/calendarexceptiontypes/impl/CalendarExceptionTypeColorConverter.java
index dd0e25aa0..c9155aee5 100644
--- a/libreplan-webapp/src/main/java/org/libreplan/ws/calendarexceptiontypes/impl/CalendarExceptionTypeColorConverter.java
+++ b/libreplan-webapp/src/main/java/org/libreplan/ws/calendarexceptiontypes/impl/CalendarExceptionTypeColorConverter.java
@@ -67,6 +67,9 @@ public class CalendarExceptionTypeColorConverter {
         addEquivalence(CalendarExceptionTypeColor.BLACK,
                 CalendarExceptionTypeColorDTO.BLACK);
 
+        addEquivalence(CalendarExceptionTypeColor.PURPLE,
+                CalendarExceptionTypeColorDTO.PURPLE);
+
     }
 
     private static void addEquivalence(CalendarExceptionTypeColor origin,