diff --git a/pkgs/by-name/gl/glmark2/package.nix b/pkgs/by-name/gl/glmark2/package.nix
index 1ba60f3588c4..9dffc8e1e928 100644
--- a/pkgs/by-name/gl/glmark2/package.nix
+++ b/pkgs/by-name/gl/glmark2/package.nix
@@ -55,7 +55,7 @@ stdenv.mkDerivation rec {
   postInstall = ''
     for binary in $out/bin/glmark2*; do
       wrapProgram $binary \
-        --set LD_LIBRARY_PATH ${libGL}/lib
+        --prefix LD_LIBRARY_PATH ":" ${libGL}/lib
     done
   '';