diff --git a/test/units/sass_extensions_test.rb b/test/units/sass_extensions_test.rb
index 99194ddd..67ffb895 100644
--- a/test/units/sass_extensions_test.rb
+++ b/test/units/sass_extensions_test.rb
@@ -134,6 +134,10 @@ class SassExtensionsTest < Test::Unit::TestCase
       evaluate("font-files('/font/name.eot?#iefix')")
     end
 
+    assert_nothing_raised Sass::SyntaxError do
+      evaluate("font-files('/font/name.svg?mightbedynamic=something%20+escaped#fontId')")
+    end
+
     assert_raises Sass::SyntaxError do
       evaluate("font-files('/font/name.ext')")
     end