diff --git a/src/lexers/jsx-lexer.js b/src/lexers/jsx-lexer.js
index f4950af3..1025ba1a 100644
--- a/src/lexers/jsx-lexer.js
+++ b/src/lexers/jsx-lexer.js
@@ -15,7 +15,7 @@ export default class JsxLexer extends JavascriptLexer {
       'i',
       'p',
     ]
-    this.omitAttributes = [this.attr, 'ns', 'defaults']
+    this.omitAttributes = [this.attr, 'ns', 'key', 'defaults']
     this.transIdentityFunctionsToIgnore =
       options.transIdentityFunctionsToIgnore || []
   }
diff --git a/test/lexers/jsx-lexer.test.js b/test/lexers/jsx-lexer.test.js
index 3269f130..b0e6b935 100644
--- a/test/lexers/jsx-lexer.test.js
+++ b/test/lexers/jsx-lexer.test.js
@@ -43,6 +43,16 @@ describe('JsxLexer', () => {
       done()
     })
 
+    it('ignores the protected React key attribute when defined', (done) => {
+      const Lexer = new JsxLexer()
+      const content =
+        '<Trans key="foo" i18nKey="first" count={count}>Yo</Trans>'
+      assert.deepEqual(Lexer.extract(content), [
+        { key: 'first', defaultValue: 'Yo', count: '{count}' },
+      ])
+      done()
+    })
+
     it('extracts default value from string literal `defaults` prop', (done) => {
       const Lexer = new JsxLexer()
       const content =