diff --git a/lib/unicode/display_width.rb b/lib/unicode/display_width.rb
index a95a77e..6275bab 100644
--- a/lib/unicode/display_width.rb
+++ b/lib/unicode/display_width.rb
@@ -236,7 +236,7 @@ def get_config(**kwargs)
       {
         ambiguous: kwargs[:ambiguous] || @ambiguous,
         overwrite: kwargs[:overwrite] || @overwrite,
-        emoji:     kwargs[:emoji]     || @emoji,
+        emoji:     kwargs.fetch(:emoji, @emoji),
       }
     end