diff --git a/intern/cycles/blender/blender_particles.cpp b/intern/cycles/blender/blender_particles.cpp
index 74142f481ed..e5de389592b 100644
--- a/intern/cycles/blender/blender_particles.cpp
+++ b/intern/cycles/blender/blender_particles.cpp
@@ -179,6 +179,8 @@ void BlenderSync::sync_particles(BL::Object b_ob, BL::ParticleSystem b_psys)
 			
 			++index;
 		}
+		
+		psys->tag_update(scene);
 	}
 }