diff --git a/test/02_test/cibuildwheel_test.py b/test/02_test/cibuildwheel_test.py
index 82f314c8..bda4131e 100644
--- a/test/02_test/cibuildwheel_test.py
+++ b/test/02_test/cibuildwheel_test.py
@@ -11,7 +11,7 @@ def test():
     env["CIBW_TEST_REQUIRES"] = "nose",
     # the 'false ||' bit is to ensure this command runs in a shell on
     # mac/linux.
-    env["CIBW_TEST_COMMAND"] = "false || nosetests {project}/test",
+    env["CIBW_TEST_COMMAND"] = "false || nosetests {project}/test"
     env["CIBW_TEST_COMMAND_WINDOWS"] = "nosetests {project}/test"
 
     # build & test the wheels
diff --git a/test/04_build_skip/cibuildwheel_test.py b/test/04_build_skip/cibuildwheel_test.py
index 570ceec7..7be8d7e7 100644
--- a/test/04_build_skip/cibuildwheel_test.py
+++ b/test/04_build_skip/cibuildwheel_test.py
@@ -8,7 +8,7 @@ import utils
 def test():
     # set up the environment
     env = os.environ.copy()
-    env["CIBW_BUILD"] = "cp3?-*",
+    env["CIBW_BUILD"] = "cp3?-*"
     env["CIBW_SKIP"] = "cp34-*"
 
     # build the wheels
diff --git a/test/05_environment/cibuildwheel_test.py b/test/05_environment/cibuildwheel_test.py
index 90d66288..3303aaff 100644
--- a/test/05_environment/cibuildwheel_test.py
+++ b/test/05_environment/cibuildwheel_test.py
@@ -10,7 +10,7 @@ def test():
     # write some information into the CIBW_ENVIRONMENT, for expansion and
     # insertion into the environment by cibuildwheel. This is checked
     # in setup.py
-    env['CIBW_ENVIRONMENT'] = 'CIBW_TEST_VAR="a b c" CIBW_TEST_VAR_2=1 CIBW_TEST_VAR_3="$(echo \'test string 3\')" PATH=$PATH:/opt/cibw_test_path',
+    env['CIBW_ENVIRONMENT'] = 'CIBW_TEST_VAR="a b c" CIBW_TEST_VAR_2=1 CIBW_TEST_VAR_3="$(echo \'test string 3\')" PATH=$PATH:/opt/cibw_test_path'
     env['CIBW_ENVIRONMENT_WINDOWS'] = 'CIBW_TEST_VAR="a b c" CIBW_TEST_VAR_2=1 CIBW_TEST_VAR_3="$(echo \'test string 3\')" PATH="$PATH;/opt/cibw_test_path"'
 
     # build the wheels