diff --git a/pkgs/development/interpreters/php/default.nix b/pkgs/development/interpreters/php/default.nix
index c967ed2b862..b28d5acf978 100644
--- a/pkgs/development/interpreters/php/default.nix
+++ b/pkgs/development/interpreters/php/default.nix
@@ -20,10 +20,12 @@ let
 
       enableParallelBuilding = true;
 
-  nativeBuildInputs = [ pkgconfig ];
+      nativeBuildInputs = [ pkgconfig ];
       buildInputs = [ flex bison ]
         ++ lib.optional stdenv.isLinux systemd;
 
+      CXXFLAGS = lib.optional stdenv.cc.isClang "-std=c++11";
+
       flags = {
 
         # much left to do here...