diff --git a/libraries/render-utils/src/ToneMappingEffect.h b/libraries/render-utils/src/ToneMappingEffect.h
index e9a4479dc9..aa48494ca0 100644
--- a/libraries/render-utils/src/ToneMappingEffect.h
+++ b/libraries/render-utils/src/ToneMappingEffect.h
@@ -66,11 +66,15 @@ private:
 class ToneMappingConfig : public render::Job::Config {
     Q_OBJECT
         Q_PROPERTY(bool enabled MEMBER enabled)
-        Q_PROPERTY(float exposure MEMBER exposure NOTIFY dirty);
-    Q_PROPERTY(int curve MEMBER curve NOTIFY dirty);
+        Q_PROPERTY(float exposure MEMBER exposure WRITE setExposure);
+    Q_PROPERTY(int curve MEMBER curve WRITE setCurve);
 public:
     ToneMappingConfig() : render::Job::Config(true) {}
 
+    void setExposure(float newExposure) { exposure = std::max(0.0f, newExposure); emit dirty(); }
+    void setCurve(int newCurve) { curve = std::max((int)ToneMappingEffect::None, std::min((int)ToneMappingEffect::Filmic, newCurve)); emit dirty(); }
+
+
     float exposure{ 0.0f };
     int curve{ ToneMappingEffect::Gamma22 };
 signals: