diff --git a/std-script/compile b/std-script/compile
--- a/std-script/compile
+++ b/std-script/compile
@@ -77,6 +77,10 @@
   exit(127)
 end
 
+if params[:prog_lang]=='cpp':
+    params[:prog_lang] = 'c++'
+end
+
 # Compile.
 case params[:prog_lang]
 
@@ -85,7 +89,6 @@
   system(command)
 
   when "c++"
-  when "cpp"
   command = "#{CPLUSPLUS_COMPILER} #{params[:source_file]} -o #{params[:output_file]} #{CPLUSPLUS_OPTIONS} 2> #{params[:message_file]}"
   system(command)