diff --git a/toolkit/content/widgets/datetimepicker.xml b/toolkit/content/widgets/datetimepicker.xml
index 955872dc9a0b..0130161dd306 100644
--- a/toolkit/content/widgets/datetimepicker.xml
+++ b/toolkit/content/widgets/datetimepicker.xml
@@ -27,7 +27,7 @@
 
     <content align="center">
       <xul:hbox class="datetimepicker-input-box" align="center"
-                xbl:inherits="context">
+                xbl:inherits="context,disabled,readonly">
         <xul:hbox class="textbox-input-box datetimepicker-input-subbox" align="center">
           <html:input class="datetimepicker-input textbox-input" anonid="input-one"
                       size="2" maxlength="2"
@@ -1215,7 +1215,7 @@
            extends="chrome://global/content/bindings/datetimepicker.xml#datepicker">
     <content align="center">
       <xul:hbox class="textbox-input-box datetimepicker-input-box" align="center"
-                allowevents="true" xbl:inherits="context">
+                allowevents="true" xbl:inherits="context,disabled,readonly">
         <xul:hbox class="datetimepicker-input-subbox" align="baseline">
           <html:input class="datetimepicker-input textbox-input" anonid="input-one"
                       size="2" maxlength="2"