diff --git a/minetest-api.d.ts b/minetest-api.d.ts
index ceec32f0..670f8819 100644
--- a/minetest-api.d.ts
+++ b/minetest-api.d.ts
@@ -1411,9 +1411,9 @@ declare global {
   }
 
   interface LightingDefinition {
-    saturation: number
-    shadows: LightShadowsSpec
-    exposure: LightExposureSpec
+    saturation?: number
+    shadows?: LightShadowsSpec
+    exposure?: LightExposureSpec
   }
 
   type CollisionBox = Array<number>