diff --git a/doc/dev/object-store.rst b/doc/dev/object-store.rst
index 77d62e4b6b6..698070c5e7f 100644
--- a/doc/dev/object-store.rst
+++ b/doc/dev/object-store.rst
@@ -9,7 +9,7 @@
    */
 
   digraph object_store {
-    size="10,10";
+    size="7,7";
     node [color=lightblue2, style=filled, fontname="Serif"];
 
     "testrados" -> "librados"