diff --git a/middleman-more/lib/middleman-more/extensions/minify_css.rb b/middleman-more/lib/middleman-more/extensions/minify_css.rb
index f5914f2d..7cec5461 100644
--- a/middleman-more/lib/middleman-more/extensions/minify_css.rb
+++ b/middleman-more/lib/middleman-more/extensions/minify_css.rb
@@ -15,7 +15,7 @@ class Middleman::Extensions::MinifyCss < ::Middleman::Extension
 
     # Setup Rack middleware to minify CSS
     app.use Rack, :compressor => chosen_compressor,
-                  :ignore     => options[:ignore] + [/\.min\./],
+                  :ignore     => Array(options[:ignore]) + [/\.min\./],
                   :inline     => options[:inline]
   end
 
diff --git a/middleman-more/lib/middleman-more/extensions/minify_javascript.rb b/middleman-more/lib/middleman-more/extensions/minify_javascript.rb
index c3c6e0bf..fb174ce1 100644
--- a/middleman-more/lib/middleman-more/extensions/minify_javascript.rb
+++ b/middleman-more/lib/middleman-more/extensions/minify_javascript.rb
@@ -18,7 +18,7 @@ class Middleman::Extensions::MinifyJavascript < ::Middleman::Extension
 
     # Setup Rack middleware to minify CSS
     app.use Rack, :compressor => chosen_compressor,
-                  :ignore     => options[:ignore] + [/\.min\./],
+                  :ignore     => Array(options[:ignore]) + [/\.min\./],
                   :inline     => options[:inline]
   end