diff --git a/index.js b/index.js
index 44f1d51..777d161 100644
--- a/index.js
+++ b/index.js
@@ -281,7 +281,7 @@ function decodefield (str) {
       value = getlatin1(binary)
       break
     case 'utf-8':
-    case 'utf8':
+    case utf8:
       value = Buffer.from(binary, 'binary').toString('utf8')
       break
     default: