diff --git a/doc/mpls/opaque_lsa.txt b/doc/mpls/opaque_lsa.txt
index 7d5c7fe..ae89ee3 100644
--- a/doc/mpls/opaque_lsa.txt
+++ b/doc/mpls/opaque_lsa.txt
@@ -20,7 +20,7 @@
           | (Callback functions) |
           +----------------------+
 
-
+
 2. Self-originated Opaque-LSAs per LSA-type.
 
 2.1 Type-11 (AS-external) Opaque-LSAs
@@ -110,7 +110,7 @@
   :     |     +-------------+                                                :
   :    ---                                                                   :
   :..........................................................................:
-
+
 2.2 Type-10 (area-local) Opaque-LSAs
 
                struct
@@ -204,7 +204,7 @@
   :     |     +-------------+                                                :
   :    ---                                                                   :
   :..........................................................................:
-
+
 2.3 Type-9 (link-local) Opaque-LSAs
 
                struct
@@ -300,7 +300,7 @@
   :           +-------------+                                                :
   :..........................................................................:
 
-
+
 3. Internal structures for MPLS-TE parameter management.
 
        struct