1 files changed, 2 insertions, 0 deletions
diff --git a/summain b/summain
index b82c108..55bb855 100755
--- a/summain
+++ b/summain
@@ -128,6 +128,8 @@ class Summain(cliapp.Application):
                 dirnames.sort()
                 for filename in sorted(filenames):
                     yield os.path.join(dirname, filename)
+        elif not os.path.exists(root):
+            raise cliapp.AppException('Does not exist: %s' % root)
         else:
             yield root