diff --git a/pkgs/development/libraries/boost/generic.nix b/pkgs/development/libraries/boost/generic.nix
index cd98c0a312be..727aa743f4f8 100644
--- a/pkgs/development/libraries/boost/generic.nix
+++ b/pkgs/development/libraries/boost/generic.nix
@@ -1,5 +1,5 @@
 { stdenv, icu, expat, zlib, bzip2, python, fixDarwinDylibNames
-, toolset ? if stdenv.isDarwin then "clang" else null
+, toolset ? if stdenv.cc.isClang then "clang" else null
 , enableRelease ? true
 , enableDebug ? false
 , enableSingleThreaded ? false