diff --git a/pkgs/applications/misc/pstree/default.nix b/pkgs/applications/misc/pstree/default.nix
index ec96ed76ce4..e11e920fdd4 100644
--- a/pkgs/applications/misc/pstree/default.nix
+++ b/pkgs/applications/misc/pstree/default.nix
@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
 
   unpackPhase = "unpackFile \$src; sourceRoot=.";
 
-  buildPhase = "pwd; gcc -o pstree pstree.c";
+  buildPhase = "pwd; $CC -o pstree pstree.c";
   installPhase = "mkdir -p \$out/bin; cp pstree \$out/bin";
 
   meta = {