diff --git a/pkgs/development/tools/eclipse-mat/default.nix b/pkgs/development/tools/eclipse-mat/default.nix
index 633e13d25f7..4f475440b04 100644
--- a/pkgs/development/tools/eclipse-mat/default.nix
+++ b/pkgs/development/tools/eclipse-mat/default.nix
@@ -1,5 +1,4 @@
-{ buildEnv
-, fetchurl
+{ fetchurl
 , fontconfig
 , freetype
 , glib