diff --git a/patches/patch_data_inputfile.checkout-dumux b/patches/patch_data_inputfile.checkout-dumux
index 6e77bf91a0d5e7a47a9532b6feebbe0461337de8..540c99e1115d112f9915974b5c8eccd24c9a5488 100644
--- a/patches/patch_data_inputfile.checkout-dumux
+++ b/patches/patch_data_inputfile.checkout-dumux
@@ -1,5 +1,9 @@
 # This file is made for selection and application of patches by checkout-dumux script
 # it's format is is of four or more fields per line 
 # fill in data here only if you are knowing what you do
-# <target_directory_relative_to-DUNEROOT>  <options_for_patch_command> <name_inputfile_for_patch> <comment rows which are displayed to the user>
-dune-istl -p1 dune-istl-2.0.patch		DUNE ISTL patch
+#
+# please make sure to work with compatible checkout dumux script
+#
+# <target_directory_relative_to-DUNEROOT>  <options_for_patch_command> <name_inputfile_for_patch> <dune_version_number> <comment rows which are displayed to the user>
+dune-istl -p1 dune-istl-2.0.patch 2.0		DUNE ISTL patch
+dune-istl -p1 dune-istl-2.0.patch 2.0.1		DUNE ISTL patch