diff --git a/control/json/zone.cpp b/control/json/zone.cpp
index 90aeb66..4d353d5 100644
--- a/control/json/zone.cpp
+++ b/control/json/zone.cpp
@@ -91,7 +91,7 @@
 
 void Zone::setTarget(uint64_t target)
 {
-    if (_isActive)
+    if (_isActive && _target != target)
     {
         _target = target;
         for (auto& fan : _fans)