diff --git a/pandas/plotting/_core.py b/pandas/plotting/_core.py
index 96609fdc1671b..f6246393a6cbc 100644
--- a/pandas/plotting/_core.py
+++ b/pandas/plotting/_core.py
@@ -228,6 +228,8 @@ def hist_frame(
     Returns
     -------
     matplotlib.AxesSubplot or numpy.ndarray of them
+        An ndarray is returned with one :class:`matplotlib.AxesSubplot`
+        per column.
 
     See Also
     --------