diff --git a/examples/api/engineering_formatter.py b/examples/api/engineering_formatter.py
index a2c5d3003b16..dac48d074bd7 100644
--- a/examples/api/engineering_formatter.py
+++ b/examples/api/engineering_formatter.py
@@ -7,13 +7,15 @@
 
 from matplotlib.ticker import EngFormatter
 
+prng = np.random.RandomState(123)
+
 fig, ax = plt.subplots()
 ax.set_xscale('log')
-formatter = EngFormatter(unit='Hz', places=1)
+formatter = EngFormatter(unit='Hz')
 ax.xaxis.set_major_formatter(formatter)
 
 xs = np.logspace(1, 9, 100)
-ys = (0.8 + 0.4*np.random.uniform(size=100))*np.log10(xs)**2
+ys = (0.8 + 0.4 * prng.uniform(size=100)) * np.log10(xs)**2
 ax.plot(xs, ys)
 
 plt.show()