matplotlib
diff --git a/‎lib/matplotlib/axes/_axes.py
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+1-1Lines changed: 1 addition & 1 deletion b/‎lib/matplotlib/axes/_axes.py
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+1-1Lines changed: 1 addition & 1 deletion
diff --git a/‎lib/matplotlib/tests/baseline_images/test_axes/acorr.png
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1.02 KB b/‎lib/matplotlib/tests/baseline_images/test_axes/acorr.png
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diff --git a/‎lib/matplotlib/tests/test_axes.py
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+2-1Lines changed: 2 additions & 1 deletion b/‎lib/matplotlib/tests/test_axes.py
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+2-1Lines changed: 2 additions & 1 deletion
@@ -1760,7 +1760,7 @@ def xcorr(self, x, y, normed=True, detrend=mlab.detrend_none,
         if usevlines:
             a = self.vlines(lags, [0], correls, **kwargs)
             # Make label empty so only vertical lines get a legend entry
-            kwargs['label'] = ''
+            kwargs.pop('label', '')
             b = self.axhline(**kwargs)
         else:
             kwargs.setdefault('marker', 'o')
 
@@ -51,7 +51,8 @@ def test_acorr():
     x = np.random.normal(0, 1, n).cumsum()
 
     fig, ax = plt.subplots()
-    ax.acorr(x, maxlags=n - 1)
+    ax.acorr(x, maxlags=n - 1, label='acorr')
+    ax.legend()
 
 
 @image_comparison(baseline_images=['spy'], extensions=['png'], style='mpl20')