diff --git a/Orange/widgets/tests/test_matplotlib_export.py b/Orange/widgets/tests/test_matplotlib_export.py
index 334f7d1ae35..3fb67a3a8ff 100644
--- a/Orange/widgets/tests/test_matplotlib_export.py
+++ b/Orange/widgets/tests/test_matplotlib_export.py
@@ -11,6 +11,7 @@
 
 def add_intro(a):
     r = "import matplotlib.pyplot as plt\n" + \
+        "import numpy as np\n" + \
         "from numpy import array\n" + \
         "plt.clf()"
     return r + a