diff --git a/pkgs/by-name/kd/kdeltachat/package.nix b/pkgs/by-name/kd/kdeltachat/package.nix
index b3935553a873..6308c12ddb0a 100644
--- a/pkgs/by-name/kd/kdeltachat/package.nix
+++ b/pkgs/by-name/kd/kdeltachat/package.nix
@@ -61,12 +61,14 @@ stdenv.mkDerivation {
     qtwebengine
   ];
 
-  # needed for qmlplugindump to work
-  QT_PLUGIN_PATH = "${qtbase.bin}/${qtbase.qtPluginPrefix}";
-  QML2_IMPORT_PATH = lib.concatMapStringsSep ":" (lib: "${lib}/${qtbase.qtQmlPrefix}") [
-    kirigami2
-    qtmultimedia
-  ];
+  env = {
+    # needed for qmlplugindump to work
+    QT_PLUGIN_PATH = "${qtbase.bin}/${qtbase.qtPluginPrefix}";
+    QML2_IMPORT_PATH = lib.concatMapStringsSep ":" (lib: "${lib}/${qtbase.qtQmlPrefix}") [
+      kirigami2
+      qtmultimedia
+    ];
+  };
 
   meta = {
     description = "Delta Chat client using Kirigami framework";