diff --git a/pkgs/applications/networking/mumble/default.nix b/pkgs/applications/networking/mumble/default.nix
index 7fbfb493737e..4e56965ff8f7 100644
--- a/pkgs/applications/networking/mumble/default.nix
+++ b/pkgs/applications/networking/mumble/default.nix
@@ -148,7 +148,6 @@ let
         ]
         ++ lib.optionals iceSupport [
           "-D Ice_HOME=${lib.getDev zeroc-ice};${lib.getLib zeroc-ice}"
-          "-D CMAKE_PREFIX_PATH=${lib.getDev zeroc-ice};${lib.getLib zeroc-ice}"
           "-D Ice_SLICE_DIR=${lib.getDev zeroc-ice}/share/ice/slice"
         ];