diff --git a/scripts/android-release-signing.mjs b/scripts/android-release-signing.mjs
index 6624896bbe8..044e1bf030d 100644
--- a/scripts/android-release-signing.mjs
+++ b/scripts/android-release-signing.mjs
@@ -83,7 +83,7 @@ function parseArgs(argv) {
 
 function readOptionValue(argv, index, option) {
   const value = argv[index + 1] ?? "";
-  if (!value || value.startsWith("--")) {
+  if (!value || value.startsWith("-")) {
     throw new Error(`Missing value for ${option}.`);
   }
   return value;
diff --git a/scripts/check-docs-mdx.mjs b/scripts/check-docs-mdx.mjs
index a4817113789..42d87da28fb 100644
--- a/scripts/check-docs-mdx.mjs
+++ b/scripts/check-docs-mdx.mjs
@@ -94,7 +94,7 @@ function parsePositiveIntegerArg(raw, label) {
 
 function readRequiredValue(argv, index, label) {
   const value = argv[index + 1];
-  if (!value || value.startsWith("--")) {
+  if (!value || value.startsWith("-")) {
     throw new Error(`${label} requires a value`);
   }
   return value;
@@ -116,7 +116,10 @@ export function parseArgs(argv) {
       continue;
     }
     if (part === "--max-errors") {
-      maxErrors = parsePositiveIntegerArg(argv[index + 1], "--max-errors");
+      maxErrors = parsePositiveIntegerArg(
+        readRequiredValue(argv, index, "--max-errors"),
+        "--max-errors",
+      );
       index += 1;
       continue;
     }
diff --git a/scripts/ios-release-signing.mjs b/scripts/ios-release-signing.mjs
index 0f9d8bc7864..42f980e7bf7 100755
--- a/scripts/ios-release-signing.mjs
+++ b/scripts/ios-release-signing.mjs
@@ -59,7 +59,7 @@ function parseArgs(argv) {
 
 function readOptionValue(argv, index, option) {
   const value = argv[index + 1] ?? "";
-  if (!value || value.startsWith("--")) {
+  if (!value || value.startsWith("-")) {
     throw new Error(`Missing value for ${option}.`);
   }
   return value;
diff --git a/test/scripts/android-release-signing.test.ts b/test/scripts/android-release-signing.test.ts
index c7fa24dc9ff..2109a541a52 100644
--- a/test/scripts/android-release-signing.test.ts
+++ b/test/scripts/android-release-signing.test.ts
@@ -30,12 +30,19 @@ function runNode(args: string[], env: NodeJS.ProcessEnv = {}) {
     const e = error as { stdout?: unknown; stderr?: unknown };
     return {
       ok: false,
-      stdout: Buffer.isBuffer(e.stdout) ? e.stdout.toString("utf8") : String(e.stdout ?? ""),
-      stderr: Buffer.isBuffer(e.stderr) ? e.stderr.toString("utf8") : String(e.stderr ?? ""),
+      stdout: formatProcessOutput(e.stdout),
+      stderr: formatProcessOutput(e.stderr),
     };
   }
 }
 
+function formatProcessOutput(value: unknown): string {
+  if (Buffer.isBuffer(value)) {
+    return value.toString("utf8");
+  }
+  return typeof value === "string" ? value : "";
+}
+
 function runGit(args: string[], cwd?: string, env: NodeJS.ProcessEnv = {}) {
   execFileSync("git", args, {
     cwd,
@@ -127,11 +134,17 @@ describe("scripts/android-release-signing.mjs", () => {
   it.each([
     ["--mode"],
     ["--mode", "--manifest"],
+    ["--mode", "-h"],
     ["--manifest"],
+    ["--manifest", "-h"],
     ["--workspace", "--mode"],
+    ["--workspace", "-h"],
     ["--materialized-dir", "--mode"],
+    ["--materialized-dir", "-h"],
     ["--keystore", "--mode"],
+    ["--keystore", "-h"],
     ["--properties", "--mode"],
+    ["--properties", "-h"],
   ])("rejects missing values for %s before release signing work", (...args) => {
     const result = runNode(args);
 
diff --git a/test/scripts/check-docs-mdx.test.ts b/test/scripts/check-docs-mdx.test.ts
index 12572122f15..602296fc765 100644
--- a/test/scripts/check-docs-mdx.test.ts
+++ b/test/scripts/check-docs-mdx.test.ts
@@ -20,11 +20,13 @@ describe("scripts/check-docs-mdx", () => {
     expect(() => parseArgs(["--max-errors", "0"])).toThrow(
       "--max-errors must be a positive integer",
     );
-    expect(() => parseArgs(["--max-errors"])).toThrow("--max-errors must be a positive integer");
+    expect(() => parseArgs(["--max-errors"])).toThrow("--max-errors requires a value");
+    expect(() => parseArgs(["--max-errors", "-h"])).toThrow("--max-errors requires a value");
   });
 
   it("rejects missing JSON report output paths", () => {
     expect(() => parseArgs(["--json-out"])).toThrow("--json-out requires a value");
+    expect(() => parseArgs(["--json-out", "-h"])).toThrow("--json-out requires a value");
     expect(() => parseArgs(["--json-out", "--max-errors", "3"])).toThrow(
       "--json-out requires a value",
     );
diff --git a/test/scripts/ios-release-signing.test.ts b/test/scripts/ios-release-signing.test.ts
index aaa0e436ea6..11762a32b3f 100644
--- a/test/scripts/ios-release-signing.test.ts
+++ b/test/scripts/ios-release-signing.test.ts
@@ -16,12 +16,19 @@ function runSigningResult(args: string[]): { ok: boolean; stdout: string; stderr
     const e = error as { stdout?: unknown; stderr?: unknown };
     return {
       ok: false,
-      stdout: Buffer.isBuffer(e.stdout) ? e.stdout.toString("utf8") : String(e.stdout ?? ""),
-      stderr: Buffer.isBuffer(e.stderr) ? e.stderr.toString("utf8") : String(e.stderr ?? ""),
+      stdout: formatProcessOutput(e.stdout),
+      stderr: formatProcessOutput(e.stderr),
     };
   }
 }
 
+function formatProcessOutput(value: unknown): string {
+  if (Buffer.isBuffer(value)) {
+    return value.toString("utf8");
+  }
+  return typeof value === "string" ? value : "";
+}
+
 function runSigning(mode: string): string {
   return execFileSync(process.execPath, [SCRIPT, "--mode", mode], {
     encoding: "utf8",
@@ -33,7 +40,9 @@ describe("scripts/ios-release-signing.mjs", () => {
   it.each([
     ["--mode"],
     ["--mode", "--manifest"],
+    ["--mode", "-h"],
     ["--manifest"],
+    ["--manifest", "-h"],
   ])("rejects missing values for %s before reading signing manifests", (...args) => {
     const result = runSigningResult(args);