diff --git a/__tests__/audit/detectors.test.ts b/__tests__/audit/detectors.test.ts
index 0df1aef5..600e5016 100644
--- a/__tests__/audit/detectors.test.ts
+++ b/__tests__/audit/detectors.test.ts
@@ -108,6 +108,9 @@ describe("sleep-polling-loop", () => {
       sleepPollingLoop.detect(bash("while true; do echo x; sleep 5; done"), {}),
     ).not.toBeNull();
   });
+  it("matches `sleep 30s`", () => {
+    expect(sleepPollingLoop.detect(bash("sleep 30s"), {})).not.toBeNull();
+  });
   it("does not match `sleep 1`", () => {
     expect(sleepPollingLoop.detect(bash("sleep 1"), {})).toBeNull();
   });
diff --git a/src/audit/detectors/sleep-polling-loop.ts b/src/audit/detectors/sleep-polling-loop.ts
index c701f0f8..248dadd2 100644
--- a/src/audit/detectors/sleep-polling-loop.ts
+++ b/src/audit/detectors/sleep-polling-loop.ts
@@ -20,7 +20,7 @@ export const sleepPollingLoop: Detector = {
       return { example: cmd.replace(/\s+/g, " ").trim().slice(0, 160) };
     }
     // Standalone long sleep. parseFloat so `sleep 0.5m` (= 30s) isn't dropped.
-    const match = /\bsleep\s+(\d+(?:\.\d+)?)(m|h|d)?\b/.exec(cmd);
+    const match = /\bsleep\s+(\d+(?:\.\d+)?)(s|m|h|d)?\b/.exec(cmd);
     if (match) {
       const n = parseFloat(match[1]);
       const unit = match[2] ?? "s";