diff --git a/scripts/lib/report-cli-helpers.mjs b/scripts/lib/report-cli-helpers.mjs
index 46e4950af96..ac71227e4fd 100644
--- a/scripts/lib/report-cli-helpers.mjs
+++ b/scripts/lib/report-cli-helpers.mjs
@@ -7,7 +7,7 @@ import path from "node:path";
  */
 function readReportOptionValue(argv, index, optionName) {
   const value = argv[index + 1];
-  if (value === undefined || value === "" || value.startsWith("--")) {
+  if (value === undefined || value === "" || value.startsWith("-")) {
     throw new Error(`Expected ${optionName} <value>.`);
   }
   return value;
diff --git a/test/scripts/report-cli-helpers.test.ts b/test/scripts/report-cli-helpers.test.ts
index b8949be796c..ab72ad51f55 100644
--- a/test/scripts/report-cli-helpers.test.ts
+++ b/test/scripts/report-cli-helpers.test.ts
@@ -23,10 +23,15 @@ describe("report-cli-helpers", () => {
     expect(() => parseReportCliArgs(["--root", "--json", "report.json"])).toThrow(
       "Expected --root <value>.",
     );
+    expect(() => parseReportCliArgs(["--root", "-h"])).toThrow("Expected --root <value>.");
     expect(() => parseReportCliArgs(["--json"])).toThrow("Expected --json <value>.");
     expect(() => parseReportCliArgs(["--json", "--markdown", "report.md"])).toThrow(
       "Expected --json <value>.",
     );
+    expect(() => parseReportCliArgs(["--json", "-h"])).toThrow("Expected --json <value>.");
     expect(() => parseReportCliArgs(["--markdown", ""])).toThrow("Expected --markdown <value>.");
+    expect(() => parseReportCliArgs(["--markdown", "-h"])).toThrow(
+      "Expected --markdown <value>.",
+    );
   });
 });