diff --git a/src/Power.cpp b/src/Power.cpp
index 5a493c4fd..0d95a6ec4 100644
--- a/src/Power.cpp
+++ b/src/Power.cpp
@@ -284,7 +284,10 @@ void Power::readPowerStatus()
                   powerStatus2.getIsCharging(), powerStatus2.getBatteryVoltageMv(), powerStatus2.getBatteryChargePercent());
         newStatus.notifyObservers(&powerStatus2);
 #ifdef DEBUG_HEAP
-        DEBUG_MSG("Heap status: %d/%d bytes free, running %d threads\n", ESP.getFreeHeap(), ESP.getHeapSize(), concurrency::mainController.size(false));
+        if (lastheap != ESP.getFreeHeap()){
+            DEBUG_MSG("Heap status: %d/%d bytes free (%d), running %d threads\n", ESP.getFreeHeap(), ESP.getHeapSize(), ESP.getFreeHeap() - lastheap , concurrency::mainController.size(false));
+            lastheap = ESP.getFreeHeap();
+        }
 #endif
 
 // If we have a battery at all and it is less than 10% full, force deep sleep if we have more than 3 low readings in a row