diff --git a/include/Display_Graphic.h b/include/Display_Graphic.h
index b5f0d5d..f216c38 100644
--- a/include/Display_Graphic.h
+++ b/include/Display_Graphic.h
@@ -26,7 +26,7 @@ private:
     uint16_t _dispY = 0;
     uint16_t _period = 1000;
     uint16_t _interval = 60000; // interval at which to power save (milliseconds)
-    uint32_t _lastPublish = 0;
+    uint32_t _lastDisplayUpdate = 0;
     uint32_t _previousMillis = 0;
     char _fmtText[32];
 };
diff --git a/src/Display_Graphic.cpp b/src/Display_Graphic.cpp
index 1c6d9ac..5a74bab 100644
--- a/src/Display_Graphic.cpp
+++ b/src/Display_Graphic.cpp
@@ -111,7 +111,7 @@ void DisplayGraphicClass::loop()
         return;
     }
 
-    if ((millis() - _lastPublish) > _period) {
+    if ((millis() - _lastDisplayUpdate) > _period) {
         float totalPower = 0;
         float totalYieldDay = 0;
         float totalYieldTotal = 0;
@@ -194,7 +194,7 @@ void DisplayGraphicClass::loop()
         _dispX = 0;
         _dispY = 0;
         _mExtra++;
-        _lastPublish = millis();
+        _lastDisplayUpdate = millis();
     }
 }