diff --git a/src/logic/scripting/lua/libs/libposteffects.cpp b/src/logic/scripting/lua/libs/libposteffects.cpp
index d16e0c85b..6eedaa6c8 100644
--- a/src/logic/scripting/lua/libs/libposteffects.cpp
+++ b/src/logic/scripting/lua/libs/libposteffects.cpp
@@ -34,7 +34,9 @@ static int l_get_intensity(lua::State* L) {
 static int l_set_intensity(lua::State* L) {
     size_t index = static_cast<size_t>(lua::tointeger(L, 1));
     float value = lua::tonumber(L, 2);
-    post_processing->getEffect(index)->setIntensity(value);
+    if (auto effect = post_processing->getEffect(index)) {
+        effect->setIntensity(value);
+    }
     return 0;
 }