diff --git a/.github/workflows/spell-check.yml b/.github/workflows/spell-check.yml
new file mode 100644
index 0000000..8c5eac7
--- /dev/null
+++ b/.github/workflows/spell-check.yml
@@ -0,0 +1,25 @@
+name: SpellCheck
+
+on:
+  workflow_dispatch:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main, 'v[0-9]+.[0-9]+' ]
+
+jobs:
+  markdown:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - uses: actions/setup-node@v3
+        with:
+          node-version: 18
+
+      - name: Install CSpell
+        run: npm install -g cspell
+
+      - name: Run CSpell
+        run: cspell --config resources/.lint/spell-check/.cspell.json "**/*"
diff --git a/project/src/pv_speaker.c b/project/src/pv_speaker.c
index ed2de08..043be30 100644
--- a/project/src/pv_speaker.c
+++ b/project/src/pv_speaker.c
@@ -150,6 +150,10 @@ PV_API pv_speaker_status_t pv_speaker_init(
                 return PV_SPEAKER_STATUS_RUNTIME_ERROR;
             }
         }
+        if (count == 0) {
+            pv_speaker_delete(o);
+            return PV_SPEAKER_STATUS_RUNTIME_ERROR;
+        }
         if (device_index >= count) {
             pv_speaker_delete(o);
             return PV_SPEAKER_STATUS_INVALID_ARGUMENT;