diff --git a/assets/javascripts/views/search/search.coffee b/assets/javascripts/views/search/search.coffee
index 39d7887c..2e802fdc 100644
--- a/assets/javascripts/views/search/search.coffee
+++ b/assets/javascripts/views/search/search.coffee
@@ -49,6 +49,14 @@ class app.views.Search extends app.View
     @autoFocus()
     return
 
+  disable: ->
+    @input.setAttribute('disabled', 'disabled')
+    return
+
+  enable: ->
+    @input.removeAttribute('disabled')
+    return
+
   onReady: =>
     @value = ''
     @delay @onInput
diff --git a/assets/javascripts/views/sidebar/sidebar.coffee b/assets/javascripts/views/sidebar/sidebar.coffee
index 81c0b408..a9550160 100644
--- a/assets/javascripts/views/sidebar/sidebar.coffee
+++ b/assets/javascripts/views/sidebar/sidebar.coffee
@@ -34,6 +34,7 @@ class app.views.Sidebar extends app.View
       @append @tmpl('sidebarSettings') if @view is @docList and @docPicker
       @view.activate()
       @restoreScrollPosition()
+      if view is @docPicker then @search.disable() else @search.enable()
     return
 
   showDocList: (reset) =>
diff --git a/assets/stylesheets/components/_header.scss b/assets/stylesheets/components/_header.scss
index 8aca9dd4..9d440ca6 100644
--- a/assets/stylesheets/components/_header.scss
+++ b/assets/stylesheets/components/_header.scss
@@ -126,6 +126,11 @@
       box-shadow: 0 0 1px $inputFocusBorder;
     }
   }
+
+  &[disabled] {
+    background: $sidebarBackground;
+    cursor: not-allowed;
+  }
 }
 
 ._search-clear {