diff --git a/app/models/spree/preferences/preferable.rb b/app/models/spree/preferences/preferable.rb
index 34cf69e193..6b970f87c4 100644
--- a/app/models/spree/preferences/preferable.rb
+++ b/app/models/spree/preferences/preferable.rb
@@ -123,7 +123,7 @@ module Spree
           if value.is_a?(FalseClass) ||
              value.nil? ||
              value == 0 ||
-             value =~ /^(f|false|0)$/i ||
+             (value.is_a?(String) && value =~ /^(f|false|0)$/i) ||
              (value.respond_to?(:empty?) && value.empty?)
             false
           else