diff --git a/lib/matplotlib/lines.py b/lib/matplotlib/lines.py
index 03d159d59d20..b1fcecca494c 100644
--- a/lib/matplotlib/lines.py
+++ b/lib/matplotlib/lines.py
@@ -651,7 +651,7 @@ def set_data(self, *args):
 
         Parameters
         ----------
-        *args : (N, 2) array or two 1D arrays
+        *args : (2, N) array or two 1D arrays
         """
         if len(args) == 1:
             (x, y), = args