diff --git a/src/line.ts b/src/line.ts
index a51ffc1..77302e9 100644
--- a/src/line.ts
+++ b/src/line.ts
@@ -1,12 +1,12 @@
 import { getVal, transformImportant } from './utils'
 
-const lineMap = {
+const lineMap: Record<string, string> = {
   1: 'none',
   1.25: 'tight',
   1.375: 'snug',
   1.5: 'normal',
   1.625: 'relaxed',
-  2: 'loose'
+  2: 'loose',
 }
 export function line(key: string, val: string) {
   const [value, important] = transformImportant(val)
diff --git a/test/line.test.ts b/test/line.test.ts
index 90c366e..b89657b 100644
--- a/test/line.test.ts
+++ b/test/line.test.ts
@@ -33,6 +33,10 @@ describe('line-height', () => {
     expect(toUnocss('line-height: 1.625;')).toBe('lh-relaxed')
   })
 
+  it('line-height: 2', () => {
+    expect(toUnocss('line-height: 2;')).toBe('lh-loose')
+  })
+
   it('calc', () => {
     expect(toUnocss('line-height: calc(100% - 20px);')).toBe(
       'lh="[calc(100%-20px)]"',