diff --git a/mozilla/layout/html/document/src/forms.css b/mozilla/layout/html/document/src/forms.css
index 6bafc502fae..4e94c8c15a1 100644
--- a/mozilla/layout/html/document/src/forms.css
+++ b/mozilla/layout/html/document/src/forms.css
@@ -397,6 +397,7 @@ input[type="submit"][disabled] {
 @media print {
   input, textarea, select, button {
     -moz-user-focus: none !important;
+    -moz-user-input: none !important;
   }
 
 }
diff --git a/mozilla/layout/style/forms.css b/mozilla/layout/style/forms.css
index 6bafc502fae..4e94c8c15a1 100644
--- a/mozilla/layout/style/forms.css
+++ b/mozilla/layout/style/forms.css
@@ -397,6 +397,7 @@ input[type="submit"][disabled] {
 @media print {
   input, textarea, select, button {
     -moz-user-focus: none !important;
+    -moz-user-input: none !important;
   }
 
 }