lib/middleman-webp/extension.rb in middleman-webp-0.4.2 vs lib/middleman-webp/extension.rb in middleman-webp-0.4.3

@@ -53,10 +53,10 @@
     private
 
     def warn_if_gif2webp_missing(builder)
       Shell.new.find_system_command('gif2webp')
     rescue Shell::Error::CommandNotFound => e
-      builder.trigger :webp, nil, "#{e.message} Please install latest version"\
+      builder.trigger :webp, '', "#{e.message} Please install latest version"\
         ' of webp library and tools to get gif2webp and be able to convert gif'\
         'files also.'
     end
 
     def cwebp_installed?(builder)