diff --git a/tools/fs_config/fs_config.c b/tools/fs_config/fs_config.c
index e797957..48f300b 100644
--- a/tools/fs_config/fs_config.c
+++ b/tools/fs_config/fs_config.c
@@ -105,6 +105,9 @@
       switch (buffer[i]) {
         case '\n':
           buffer[i-is_dir] = '\0';
+          if (i == 0) {
+            is_dir = 1; // empty line is considered as root directory
+          }
           i = 1025;
           break;
         case '/':