diff --git a/doc/design-2.3.rst b/doc/design-2.3.rst
index debcd40bdb1e2e99fd6ba04a82954721e716294a..bd8faad5b9038a0b456831a166f9440d92bb457f 100644
--- a/doc/design-2.3.rst
+++ b/doc/design-2.3.rst
@@ -82,7 +82,7 @@ The ``alloc_policy`` attribute can have the following values:
 - preferred: the node group can be used freely for allocation of
   instances (this is the default state for newly created node
   groups). Note that prioritization among groups in this state will be
-  deferred to the  iallocator plugin that's being used.
+  deferred to the iallocator plugin that's being used.
 
 Node group operations
 +++++++++++++++++++++