diff --git a/Formula/libphonenumber.rb b/Formula/libphonenumber.rb
index 2ede5197fd..f9b79e0d0e 100644
--- a/Formula/libphonenumber.rb
+++ b/Formula/libphonenumber.rb
@@ -23,8 +23,6 @@ class Libphonenumber < Formula
     sha256 "9bf1fe5182a604b4135edc1a425ae356c9ad15e9b23f9f12a02e80184c3a249c"
   end
 
-  needs :cxx11
-
   def install
     ENV.cxx11
     (buildpath/"gtest").install resource("gtest")