diff --git a/bin/is b/bin/is
index 189c4d0ad705c3a61719b70f224789861507ef7a..3b0cfe9ddf389c24ff1d222885299699f0714d9f 100755
--- a/bin/is
+++ b/bin/is
@@ -171,7 +171,7 @@ ex_group.add_argument('-d', "--debug", action="store_true",
 ex_group.add_argument('-q', "--quiet", action="store_true",
                       help="active quiet mode")
 # common options
-p_main.add_argument("-c", "--config", default="is",
+p_main.add_argument("-c", "--config", default="installsystems",
                     help="config file path")
 p_main.add_argument("-f", "--repo-filter", default=None,
                     help="select repository by name in config files")
@@ -248,7 +248,7 @@ try:
     installsystems.debug = args.debug
     installsystems.quiet = args.quiet
     # load isinstall config
-    config = MainConfigFile(args.config)
+    config = MainConfigFile(args.config, "installsystems")
     config.merge(args)
     # set debug and quiet mode after merge
     installsystems.debug = args.debug
diff --git a/samples/is.conf b/samples/installsystems.conf
similarity index 87%
rename from samples/is.conf
rename to samples/installsystems.conf
index 23b9b6f466e0e15bfa8749c04e7e1ab8c99333bd..0210cd9df4232b778ecd8dfe0d92f82acea5eaca 100644
--- a/samples/is.conf
+++ b/samples/installsystems.conf
@@ -1,6 +1,6 @@
-# is program configuration
+# installsystems main configuration
 
-[is]
+[installsystems]
 
 # Set debug mode
 #debug = True