diff --git a/.github/workflows/unit-test.yml b/.github/workflows/unit-test.yml
new file mode 100644
index 0000000..8584492
--- /dev/null
+++ b/.github/workflows/unit-test.yml
@@ -0,0 +1,36 @@
+name: Unit Tests
+
+on:
+  pull_request:
+    branches: [main]
+  push:
+    branches: [main]
+
+
+jobs:
+  tests:
+    name: Flow CLI Tests
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+      with:
+        submodules: "true"
+    - name: Set up Go
+      uses: actions/setup-go@v3
+      with:
+        go-version: 1.18
+    - name: Set up Node
+      uses: actions/setup-node@v2
+      with:
+        node-version: ^18
+    - name: Install Flow dependencies
+      run: npm i
+    - name: Install Flow CLI
+      run: bash -ci "$(curl -fsSL https://raw.githubusercontent.com/onflow/flow-cli/master/install.sh)" -- v1.17.0
+    - name: Run tests
+      run: sh ./run-tests.sh
+    - name: Upload coverage reports to Codecov
+      uses: codecov/codecov-action@v4.0.1
+      with:
+        token: ${{ secrets.CODECOV_TOKEN }}
+        slug: Flowtyio/flowty-drops
\ No newline at end of file
diff --git a/contracts/DropFactory.cdc b/contracts/DropFactory.cdc
index 090a189..a344f91 100644
--- a/contracts/DropFactory.cdc
+++ b/contracts/DropFactory.cdc
@@ -17,7 +17,7 @@ pub contract DropFactory {
         minterCap: Capability<&{FlowtyDrops.Minter}>
     ): @FlowtyDrops.Drop {
         pre {
-            Type<@FungibleToken.Vault>().isSubtype(of: paymentTokenType): "paymentTokenType must be a FungibleToken"
+            paymentTokenType.isSubtype(of: Type<@FungibleToken.Vault>()): "paymentTokenType must be a FungibleToken"
         }
 
         // This drop is always on and never ends.
diff --git a/tests/test_helpers.cdc b/tests/test_helpers.cdc
index cdeb025..6d69116 100644
--- a/tests/test_helpers.cdc
+++ b/tests/test_helpers.cdc
@@ -157,6 +157,7 @@ pub fun deployAll() {
     deploy("FlowtySwitches", "../contracts/FlowtySwitches.cdc", [])
     deploy("FlowtyPricers", "../contracts/FlowtyPricers.cdc", [])
     deploy("FlowtyAddressVerifiers", "../contracts/FlowtyAddressVerifiers.cdc", [])
+    deploy("DropFactory", "../contracts/DropFactory.cdc", [])
 
     deploy("OpenEditionNFT", "../contracts/nft/OpenEditionNFT.cdc", [])
 }