diff --git a/src/CHANGES.md b/src/CHANGES.md
index a6746af5..731cd479 100644
--- a/src/CHANGES.md
+++ b/src/CHANGES.md
@@ -1,5 +1,8 @@
 # Development Changes
 
+## 0.7.21 - 2023-07-30
+* fix MqTT YieldDay Total goes to 0 serveral times #1016
+
 ## 0.7.20 - 2023-07-28
 * merge PR #1048 version and hash in API, fixes #1045
 * fix: no yield day update if yield day reads `0` after inverter reboot (mostly on evening) #848
diff --git a/src/defines.h b/src/defines.h
index 062bb0a9..579a2d8f 100644
--- a/src/defines.h
+++ b/src/defines.h
@@ -13,7 +13,7 @@
 //-------------------------------------
 #define VERSION_MAJOR       0
 #define VERSION_MINOR       7
-#define VERSION_PATCH       20
+#define VERSION_PATCH       21
 
 //-------------------------------------
 typedef struct {
diff --git a/src/publisher/pubMqttIvData.h b/src/publisher/pubMqttIvData.h
index 40abd6bf..8de300ca 100644
--- a/src/publisher/pubMqttIvData.h
+++ b/src/publisher/pubMqttIvData.h
@@ -138,7 +138,7 @@ class PubMqttIvData {
                                         mTotal[1] += mIv->getValue(mPos, rec);
                                         break;
                                     case FLD_YD: {
-                                        uint8_t val = mIv->getValue(mPos, rec);
+                                        float val = mIv->getValue(mPos, rec);
                                         if(0 == val) // inverter restarted during day
                                             mSendTotalYd = false;
                                         else