diff --git a/packages/code-map/__tests__/parse.test.ts b/packages/code-map/__tests__/parse.test.ts
index 57dd11251d..a15d881c05 100644
--- a/packages/code-map/__tests__/parse.test.ts
+++ b/packages/code-map/__tests__/parse.test.ts
@@ -132,7 +132,7 @@ describe('parse module', () => {
         () => multilineCode,
       )
 
-      expect(result.numLines).toBe(2) // Due to operator precedence: .match(/\n/g)?.length ?? 0 + 1 becomes (2 ?? 1) = 2
+      expect(result.numLines).toBe(3)
     })
 
     it('should deduplicate identifiers and calls', () => {
diff --git a/packages/code-map/src/parse.ts b/packages/code-map/src/parse.ts
index 2ab2a0fc05..09c1866a2f 100644
--- a/packages/code-map/src/parse.ts
+++ b/packages/code-map/src/parse.ts
@@ -169,7 +169,7 @@ export function parseTokens(
         calls: [] as string[],
       }
     }
-    const numLines = sourceCode.match(/\n/g)?.length ?? 0 + 1
+    const numLines = (sourceCode.match(/\n/g)?.length ?? 0) + 1
     if (!parser || !query) {
       throw new Error('Parser or query not found')
     }