diff --git a/mrbgems/mruby-bin-config/mruby-config b/mrbgems/mruby-bin-config/mruby-config
index 0754cad7c..8bbb4ecc6 100644
--- a/mrbgems/mruby-bin-config/mruby-config
+++ b/mrbgems/mruby-bin-config/mruby-config
@@ -5,8 +5,6 @@ print_help()
   echo "Usage: mruby-config [switches]"
   echo "  switches:"
   echo "  --cflags                    print flags passed to compiler"
-  echo "  --cflags                    print flags passed to compiler"
-  echo "  --cflags                    print flags passed to compiler"
   echo "  --ldflags                   print flags passed to linker"
   echo "  --ldflags-before-libs       print flags passed to linker before linked libraries"
   echo "  --libs                      print linked libraries"