diff --git a/.github/workflows/live-test.yaml b/.github/workflows/live-test.yaml
index a5f8fbe..6ed2cd7 100644
--- a/.github/workflows/live-test.yaml
+++ b/.github/workflows/live-test.yaml
@@ -32,7 +32,7 @@ jobs:
 
     strategy:
       matrix:
-        ipv: [4, 6]
+        ipv: [ipv4, ipv6]
 
     steps:
       - uses: actions/checkout@v4
@@ -51,10 +51,10 @@ jobs:
         run: npm ci --no-audit
 
       - name: Set up WARP
-        if: matrix.ipv == 6
+        if: matrix.ipv == 'ipv6'
         uses: fscarmen/warp-on-actions@v1.0
 
-      - name: Run tests (IPv4)
+      - name: Run tests
         env:
           IPV: ${{ matrix.ipv }}
           HOSTNAME: ${{ env.HOSTNAME }}
diff --git a/test.ts b/test.ts
index 401ecdb..2c65f49 100644
--- a/test.ts
+++ b/test.ts
@@ -5,9 +5,10 @@ import { randomWords } from "@nordicsemiconductor/random-words";
 import { ipv4, ipv6 } from "./ip";
 
 const hostname = process.env.HOSTNAME ?? "localhost";
-const ipv = process.env.IPV ?? "4";
+const ipv = process.env.IPV ?? "ipv4";
 
-const addr = ipv === "6" ? `[${await ipv6(hostname)}]` : await ipv4(hostname);
+const addr =
+  ipv === "ipv6" ? `[${await ipv6(hostname)}]` : await ipv4(hostname);
 
 describe("MQTT server", async () => {
   await Promise.all(