diff --git a/calendar/resources/content/eventDialog.xul b/calendar/resources/content/eventDialog.xul
index ae4ed7d3127a..5e26bfb3b663 100644
--- a/calendar/resources/content/eventDialog.xul
+++ b/calendar/resources/content/eventDialog.xul
@@ -348,7 +348,7 @@
                      <textbox id="repeat-length-field"
                               class="cursor-pointer"
                               disable-controller="repeat"
-                              value="1"
+                              value=""
                               oninput="repeatLengthKeyDown( this )"/>
                               
                      <menulist crop="none"
diff --git a/calendar/resources/content/toDoDialog.xul b/calendar/resources/content/toDoDialog.xul
index fdf0bea044e0..53ecbab6ac77 100644
--- a/calendar/resources/content/toDoDialog.xul
+++ b/calendar/resources/content/toDoDialog.xul
@@ -411,7 +411,7 @@
                      <textbox id="repeat-length-field"
                               class="cursor-pointer"
                               disable-controller="repeat"
-                              value="1"
+                              value=""
                               oninput="repeatLengthKeyDown( this )"/>
                               
                      <menulist crop="none"