diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
new file mode 100644
index 00000000..876b7e34
--- /dev/null
+++ b/.github/workflows/test.yml
@@ -0,0 +1,26 @@
+name: Unit Tests
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout Code
+      uses: actions/checkout@v2
+    - name: Set up Python 3.8
+      uses: actions/setup-python@v2
+      with:
+        python-version: 3.8
+    - name: Install Dependencies
+      run: pip install ipython numpy tqdm requests
+    - name: Run Tests
+      run: ipython3 test/mnist.py
diff --git a/tinygrad/utils.py b/tinygrad/utils.py
index bbef87f6..61f57224 100644
--- a/tinygrad/utils.py
+++ b/tinygrad/utils.py
@@ -2,7 +2,7 @@ def fetch_mnist():
   def fetch(url):
     import requests, gzip, os, hashlib, numpy
     fp = os.path.join("/tmp", hashlib.md5(url.encode('utf-8')).hexdigest())
-    if not os.path.isfile(fp):
+    if os.path.isfile(fp):
       with open(fp, "rb") as f:
         dat = f.read()
     else: