diff --git a/frontend/src/components/tools/flatten/FlattenSettings.tsx b/frontend/src/components/tools/flatten/FlattenSettings.tsx
index a8ec9af07..8386ad493 100644
--- a/frontend/src/components/tools/flatten/FlattenSettings.tsx
+++ b/frontend/src/components/tools/flatten/FlattenSettings.tsx
@@ -4,7 +4,7 @@ import { FlattenParameters } from "../../../hooks/tools/flatten/useFlattenParame
 
 interface FlattenSettingsProps {
   parameters: FlattenParameters;
-  onParameterChange: (key: keyof FlattenParameters, value: boolean) => void;
+  onParameterChange: <K extends keyof FlattenParameters>(key: K, value: FlattenParameters[K]) => void;
   disabled?: boolean;
 }