diff --git a/lib/matplotlib/colorbar.py b/lib/matplotlib/colorbar.py
index 82d5a04f7341..ad6a145a9d12 100644
--- a/lib/matplotlib/colorbar.py
+++ b/lib/matplotlib/colorbar.py
@@ -580,7 +580,7 @@ def _ticker(self):
else:
b = self._boundaries[self._inside]
locator = ticker.FixedLocator(b, nbins=10)
- if isinstance(self.norm, colors.NoNorm):
+ if isinstance(self.norm, colors.NoNorm) and self.boundaries is None:
intv = self._values[0], self._values[-1]
else:
intv = self.vmin, self.vmax
diff --git a/lib/matplotlib/tests/baseline_images/test_colorbar/double_cbar.png b/lib/matplotlib/tests/baseline_images/test_colorbar/double_cbar.png
index b7f1f927207a..ff2c50eb405c 100644
Binary files a/lib/matplotlib/tests/baseline_images/test_colorbar/double_cbar.png and b/lib/matplotlib/tests/baseline_images/test_colorbar/double_cbar.png differ
diff --git a/lib/matplotlib/tests/baseline_images/test_contour/contour_manual_colors_and_levels.png b/lib/matplotlib/tests/baseline_images/test_contour/contour_manual_colors_and_levels.png
index c41174025baf..6de9c579758d 100644
Binary files a/lib/matplotlib/tests/baseline_images/test_contour/contour_manual_colors_and_levels.png and b/lib/matplotlib/tests/baseline_images/test_contour/contour_manual_colors_and_levels.png differ
diff --git a/lib/matplotlib/tests/test_colorbar.py b/lib/matplotlib/tests/test_colorbar.py
index de7decb6ec62..8d0bc1d709b8 100644
--- a/lib/matplotlib/tests/test_colorbar.py
+++ b/lib/matplotlib/tests/test_colorbar.py
@@ -282,6 +282,22 @@ def test_colorbar_closed_patch():
extend='neither', values=values)
+@cleanup
+def test_colorbar_ticks():
+ # test fix for #5673
+ fig, ax = plt.subplots()
+ x = np.arange(-3.0, 4.001)
+ y = np.arange(-4.0, 3.001)
+ X, Y = np.meshgrid(x, y)
+ Z = X * Y
+ clevs = np.array([-12, -5, 0, 5, 12], dtype=float)
+ colors = ['r', 'g', 'b', 'c']
+ cs = ax.contourf(X, Y, Z, clevs, colors=colors)
+ cbar = fig.colorbar(cs, ax=ax, extend='neither',
+ orientation='horizontal', ticks=clevs)
+ assert len(cbar.ax.xaxis.get_ticklocs()) == len(clevs)
+
+
if __name__ == '__main__':
import nose
nose.runmodule(argv=['-s', '--with-doctest'], exit=False)
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