diff --git a/RX_FSK/version.h b/RX_FSK/version.h
index 2aef016..eae4680 100644
--- a/RX_FSK/version.h
+++ b/RX_FSK/version.h
@@ -1,4 +1,4 @@
 const char *version_name = "rdzTTGOsonde";
-const char *version_id = "devel20210817";
+const char *version_id = "devel20210905";
 const int SPIFFS_MAJOR=2;
 const int SPIFFS_MINOR=14;
diff --git a/libraries/SondeLib/Sonde.cpp b/libraries/SondeLib/Sonde.cpp
index 1bbfef8..5e9af67 100644
--- a/libraries/SondeLib/Sonde.cpp
+++ b/libraries/SondeLib/Sonde.cpp
@@ -453,8 +453,8 @@ void Sonde::addSonde(float frequency, SondeType type, int active, char *launchsi
 	}
 	Serial.printf("Adding %f - %d - %d - %s\n", frequency, type, active, launchsite);
 	// reset all data if type or frequency has changed
-	if(type != sondeList[nSonde].type || frequency != sondeList[nSonde].frequency) {
-	    memset(sondeList[nSonde], 0, sizeof(SondeInfo));
+	if(type != sondeList[nSonde].type || frequency != sondeList[nSonde].freq) {
+    	    memset(&sondeList[nSonde], 0, sizeof(SondeInfo));
 	}
 	sondeList[nSonde].type = type;
 	sondeList[nSonde].typestr[0] = 0;