diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
new file mode 100644
index 0000000..2f9163b
--- /dev/null
+++ b/.github/workflows/test.yml
@@ -0,0 +1,25 @@
+name: Run Tests
+
+on: [pull_request, push]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Set up Python 3.6
+      uses: actions/setup-python@v1
+      with:
+        python-version: 3.6
+    - name: Versions
+      run: |
+        python3 --version
+    - name: Checkout Current Repo
+      uses: actions/checkout@v1
+      with:
+        submodules: true
+    - name: Install pytest
+      run: pip install pytest
+    - name: Install locally
+      run: pip install .
+    - name: Run tests
+      run: pytest
diff --git a/adafruit_motor/stepper.py b/adafruit_motor/stepper.py
index b3c9bd8..2dfe614 100755
--- a/adafruit_motor/stepper.py
+++ b/adafruit_motor/stepper.py
@@ -73,13 +73,13 @@ class StepperMotor:
 
     **PWM**
 
-    :param ~pulseio.PWMOut ain1: ``pulseio.PWMOut``-compatible output connected to the driver for
+    :param ~pwmio.PWMOut ain1: `pwmio.PWMOut`-compatible output connected to the driver for
       the first coil (unipolar) or first input to first coil (bipolar).
-    :param ~pulseio.PWMOut ain2: ``pulseio.PWMOut``-compatible output connected to the driver for
+    :param ~pwmio.PWMOut ain2: `pwmio.PWMOut`-compatible output connected to the driver for
       the third coil (unipolar) or second input to first coil (bipolar).
-    :param ~pulseio.PWMOut bin1: ``pulseio.PWMOut``-compatible output connected to the driver for
+    :param ~pwmio.PWMOut bin1: `pwmio.PWMOut`-compatible output connected to the driver for
       the second coil (unipolar) or second input to second coil (bipolar).
-    :param ~pulseio.PWMOut bin2: ``pulseio.PWMOut``-compatible output connected to the driver for
+    :param ~pwmio.PWMOut bin2: `pwmio.PWMOut`-compatible output connected to the driver for
       the fourth coil (unipolar) or second input to second coil (bipolar).
     :param int microsteps: Number of microsteps between full steps. Must be at least 2 and even.