diff --git a/tests/test_debuglibrary.py b/tests/test_debuglibrary.py

index cdfe052..eb40143 100644

--- a/tests/test_debuglibrary.py

+++ b/tests/test_debuglibrary.py

@@ -38,7 +38,7 @@ def check_command(command, pattern):

 def base_functional_testing():

     global child

-    child = pexpect.spawn('coverage',

+    child = pexpect.spawn('coverage3',

                           ['run', '--append', 'DebugLibrary/shell.py'])

     child.expect('Enter interactive shell', timeout=TIMEOUT_SECONDS * 3)

@@ -103,7 +103,7 @@ def step_functional_testing():

     global child

     # Command "coverage run robot tests/step.robot" does not work,

     # so start the program using DebugLibrary's shell instead of "robot".

-    child = pexpect.spawn('coverage',

+    child = pexpect.spawn('coverage3',

                           ['run', '--append', 'DebugLibrary/shell.py',

                            'tests/step.robot'])

     child.expect('Type "help" for more information.*>',