diff --git a/scripts/verify-docker-attestations.mjs b/scripts/verify-docker-attestations.mjs
index a3cc976aa46..e0aa245b671 100644
--- a/scripts/verify-docker-attestations.mjs
+++ b/scripts/verify-docker-attestations.mjs
@@ -134,7 +134,7 @@ function inspectRaw(imageRef) {
 
 function readOptionValue(argv, index, optionName) {
   const value = argv[index + 1];
-  if (value === undefined || value === "" || value.startsWith("--")) {
+  if (value === undefined || value === "" || value.startsWith("-")) {
     throw new Error(`${optionName} requires a value`);
   }
   return value;
diff --git a/test/scripts/verify-docker-attestations.test.ts b/test/scripts/verify-docker-attestations.test.ts
index 6fe68adb883..1a829975a9e 100644
--- a/test/scripts/verify-docker-attestations.test.ts
+++ b/test/scripts/verify-docker-attestations.test.ts
@@ -69,6 +69,7 @@ describe("verify-docker-attestations", () => {
 
   it("rejects missing platform option values", () => {
     expect(() => parseArgs(["--platform"])).toThrow("--platform requires a value");
+    expect(() => parseArgs(["--platform", "-h"])).toThrow("--platform requires a value");
     expect(() => parseArgs(["--platform", "--help"])).toThrow("--platform requires a value");
     expect(() => parseArgs(["--platform", ""])).toThrow("--platform requires a value");
   });