diff --git a/docs/metrics-howto.rst b/docs/metrics-howto.rst
index 7aa4757a3..ca10799b0 100644
--- a/docs/metrics-howto.rst
+++ b/docs/metrics-howto.rst
@@ -51,9 +51,9 @@ python_gc_counts            reactor_gc_counts
 
 The twisted-specific reactor metrics have been renamed.
 
-==================================== =================
+==================================== =====================
 New name                             Old name
------------------------------------- -----------------
-python_twisted_reactor_pending_calls reactor_tick_time
+------------------------------------ ---------------------
+python_twisted_reactor_pending_calls reactor_pending_calls
 python_twisted_reactor_tick_time     reactor_tick_time
-==================================== =================
+==================================== =====================