diff --git a/lib/user_agent/browsers/all.rb b/lib/user_agent/browsers/all.rb
index 42b1bfd..276cfed 100644
--- a/lib/user_agent/browsers/all.rb
+++ b/lib/user_agent/browsers/all.rb
@@ -29,11 +29,11 @@ def application
       end
 
       def browser
-        application.product
+        application && application.product
       end
 
       def version
-        application.version
+        application && application.version
       end
 
       def platform
@@ -63,7 +63,7 @@ def mobile?
           true
         elsif detect_product('Mobile')
           true
-        elsif application.comment &&
+        elsif application && application.comment &&
             application.comment.detect { |k, v| k =~ /^IEMobile/ }
           true
         else
@@ -72,6 +72,11 @@ def mobile?
       end
 
       def bot?
+        # If UA has no application type, its probably generated by a
+        # shitty bot.
+        if application.nil?
+          true
+
         # Match common case when bots refer to themselves as bots in
         # the application comment. There are no standards for how bots
         # should call themselves so its not an exhaustive method.
@@ -79,7 +84,7 @@ def bot?
         # If you want to expand the scope, override the method and
         # provide your own regexp. Any patches to future extend this
         # list will be rejected.
-        if comment = application.comment
+        elsif comment = application.comment
           comment.any? { |c| c =~ /bot/i }
         else
           false