diff --git a/lib/iris/analysis/__init__.py b/lib/iris/analysis/__init__.py
index 11810f2901..85b49ece4e 100644
--- a/lib/iris/analysis/__init__.py
+++ b/lib/iris/analysis/__init__.py
@@ -2118,7 +2118,7 @@ def interp_order(length):
 
 .. note::
 
-    Lazy operation is supported, via :func:`dask.array.nanstd`.
+    Lazy operation is supported, via :func:`dask.array.std`.
 
 This aggregator handles masked data.
 
@@ -2192,7 +2192,7 @@ def interp_order(length):
 
 .. note::
 
-    Lazy operation is supported, via :func:`dask.array.nanvar`.
+    Lazy operation is supported, via :func:`dask.array.var`.
 
 This aggregator handles masked data.