diff --git a/src/compiler/scanner.ts b/src/compiler/scanner.ts
index 343df39ad9cbc..c4e20bb055e28 100644
--- a/src/compiler/scanner.ts
+++ b/src/compiler/scanner.ts
@@ -3915,7 +3915,7 @@ export function createScanner(
 
         if (isIdentifierStart(ch, languageVersion)) {
             let char = ch;
-            while (pos < end && isIdentifierPart(char = codePointUnchecked(pos), languageVersion) || char === CharacterCodes.minus) pos += charSize(char);
+            while (pos < end && (isIdentifierPart(char = codePointUnchecked(pos), languageVersion) || char === CharacterCodes.minus)) pos += charSize(char);
             tokenValue = text.substring(tokenStart, pos);
             if (char === CharacterCodes.backslash) {
                 tokenValue += scanIdentifierParts();
diff --git a/src/testRunner/unittests/comments.ts b/src/testRunner/unittests/comments.ts
index a1eeeb8aacfa1..cbd07e3c7f180 100644
--- a/src/testRunner/unittests/comments.ts
+++ b/src/testRunner/unittests/comments.ts
@@ -11,6 +11,7 @@ describe("comment parsing", () => {
     const withTrailing = `;/* comment */
 // another one
 `;
+    const endingInHyphen = "/**comment-*/";
     it("skips shebang", () => {
         const result = ts.getLeadingCommentRanges(withShebang, 0);
         assert.isDefined(result);
@@ -29,4 +30,16 @@ describe("comment parsing", () => {
         assert.strictEqual(result.length, 1);
         assert.strictEqual(result[0].kind, ts.SyntaxKind.SingleLineCommentTrivia);
     });
+
+    it("parses /** block comments ending in hyphen", () => {
+        const sourceFile = ts.createSourceFile(
+            "file.ts",
+            `${endingInHyphen}\nconst x = 1;`,
+            ts.ScriptTarget.ESNext,
+            true,
+        );
+
+        assert.strictEqual(sourceFile.parseDiagnostics.length, 0);
+        assert.strictEqual(sourceFile.statements.length, 1);
+    });
 });