diff --git a/leenkx/Sources/iron/object/ParticleSystem.hx b/leenkx/Sources/iron/object/ParticleSystem.hx
index 5fab3a7..bd66660 100644
--- a/leenkx/Sources/iron/object/ParticleSystem.hx
+++ b/leenkx/Sources/iron/object/ParticleSystem.hx
@@ -71,11 +71,12 @@ class ParticleSystem {
 		Data.getParticle(sceneName, pref.particle, function(b: ParticleData) {
 			data = b;
 			r = data.raw;
-			if (r.dynamic_emitter != null){
-				dynamicEmitter = r.dynamic_emitter; 
-			} else {
-				dynamicEmitter = true;
+			var dyn: Null<Bool> = r.dynamic_emitter;
+			var dynValue: Bool = true;
+			if (dyn != null) {
+				dynValue = dyn;
 			}
+			dynamicEmitter = dynValue;
 			if (Scene.active.raw.gravity != null) {
 				gx = Scene.active.raw.gravity[0] * r.weight_gravity;
 				gy = Scene.active.raw.gravity[1] * r.weight_gravity;