diff --git a/pkgs/development/python-modules/llm/default.nix b/pkgs/development/python-modules/llm/default.nix
index f50ae25ec263..78ec739553f6 100644
--- a/pkgs/development/python-modules/llm/default.nix
+++ b/pkgs/development/python-modules/llm/default.nix
@@ -259,7 +259,7 @@ let
       };
 
       # include tests for all the plugins
-      tests = lib.mergeAttrsList (map (name: python.pkgs.${name}.tests) withPluginsArgNames);
+      tests = lib.mergeAttrsList (map (name: python.pkgs.${name}.tests or { }) withPluginsArgNames);
     };
 
     meta = {