diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 2e22497a8a0..f91dcbac132 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -225,6 +225,7 @@ mapAliases ({
   fwupdate = throw "fwupdate was merged into fwupd"; # added 2020-05-19
   g4py = python3Packages.geant4; # added 2020-06-06
   gccApple = throw "gccApple is no longer supported"; # added 2018-04-25
+  gdal_1_11 = throw "gdal_1_11 was removed. Use gdal instead."; # added 2021-04-03
   gdb-multitarget = gdb; # added 2017-11-13
   gdk_pixbuf = gdk-pixbuf; # added 2019-05-22
   gettextWithExpat = gettext; # 2016-02-19