diff --git a/lib/rscons/environment.rb b/lib/rscons/environment.rb
index 65b3f89..4412f74 100644
--- a/lib/rscons/environment.rb
+++ b/lib/rscons/environment.rb
@@ -48,6 +48,7 @@ module Rscons
     end
 
     def execute(short_desc, command)
+      command = command.flatten
       if @echo == :command
         puts command.join(' ')
       elsif @echo == :short