diff --git a/src/plugins/history.h b/src/plugins/history.h
index d8b080b0..2b5f0d32 100644
--- a/src/plugins/history.h
+++ b/src/plugins/history.h
@@ -53,12 +53,12 @@ class HistoryData {
             mYieldDay.refreshCycle = 60;
 			mLastValueTs = 0;
             mPgPeriod=0;
+            mMaximumDay = 0;
         }
 
         void tickerSecond() {
-            ;
             float curPwr = 0;
-            float maxPwr = 0;
+            //float maxPwr = 0;
             float yldDay = -0.1;
 			uint32_t ts = 0;
 
@@ -68,7 +68,7 @@ class HistoryData {
                 if (iv == NULL)
                     continue;
                 curPwr += iv->getChannelFieldValue(CH0, FLD_PAC, rec);
-                maxPwr += iv->getChannelFieldValue(CH0, FLD_MP, rec);
+                //maxPwr += iv->getChannelFieldValue(CH0, FLD_MP, rec);
                 yldDay += iv->getChannelFieldValue(CH0, FLD_YD, rec);
 				if (rec->ts > ts)
 					ts = rec->ts;
@@ -79,9 +79,11 @@ class HistoryData {
                 if (curPwr > 0) {
 					mLastValueTs = ts;
                     addValue(&mCurPwr, roundf(curPwr));
-				}
-                if (maxPwr > 0)
-                    mMaximumDay = roundf(maxPwr);
+                    if (curPwr > mMaximumDay)
+                        mMaximumDay = roundf(curPwr);
+                }
+                //if (maxPwr > 0)
+                //    mMaximumDay = roundf(maxPwr);
             }
 
             if ((++mCurPwrDay.loopCnt % mCurPwrDay.refreshCycle) == 0) {