diff --git a/lib/matplotlib/axes/_axes.py b/lib/matplotlib/axes/_axes.py
index e7b484bc99a9..9a2b367fb502 100644
--- a/lib/matplotlib/axes/_axes.py
+++ b/lib/matplotlib/axes/_axes.py
@@ -1589,7 +1589,7 @@ def plot(self, *args, scalex=True, scaley=True, data=None, **kwargs):
           >>> plot(x1, y1, 'bo')
           >>> plot(x2, y2, 'go')
 
-        - If *x* and/or *y* are 2D arrays a separate data set will be drawn
+        - If *x* and/or *y* are 2D arrays, a separate data set will be drawn
           for every column. If both *x* and *y* are 2D, they must have the
           same shape. If only one of them is 2D with shape (N, m) the other
           must have length N and will be used for every data set m.