diff --git a/SUMMARY.md b/SUMMARY.md
index 610afda..9471d93 100644
--- a/SUMMARY.md
+++ b/SUMMARY.md
@@ -21,7 +21,7 @@
     * [Bringing Up CORD](profiles/intro.md)
         * [R-CORD](profiles/rcord/install.md)
             * [OLT Setup](openolt/README.md)
-	        * [Emulated OLT/ONU](profiles/rcord/emulate.md)
+                * [Emulated OLT/ONU](profiles/rcord/emulate.md)
         * [M-CORD](profiles/mcord/install.md)
             * [EnodeB Setup](profiles/mcord/enodeb-setup.md)
     * [Helm Reference](charts/helm.md)
@@ -55,7 +55,7 @@
         * [vRouter](vrouter/README.md)
 * [Development Guide](developer/developer.md)
     * [Getting the Source Code](developer/getting_the_code.md)
-    * [Writing Models and Synchronizers](xos/README.md)
+    * [Writing Models and Synchronizers](xos/intro.md)
         * [XOS Modeling Framework](xos/dev/xproto.md)
             * [XOS Tool Chain (Internals)](xos/dev/xosgenx.md)
         * [XOS Synchronizer Framework](xos/dev/synchronizers.md)