diff --git a/lib/Hoymiles/src/inverters/HMS_Abstract.cpp b/lib/Hoymiles/src/inverters/HMS_Abstract.cpp
index 30de003..326ac83 100644
--- a/lib/Hoymiles/src/inverters/HMS_Abstract.cpp
+++ b/lib/Hoymiles/src/inverters/HMS_Abstract.cpp
@@ -14,7 +14,7 @@ HMS_Abstract::HMS_Abstract(HoymilesRadio* radio, uint64_t serial)
 
 bool HMS_Abstract::sendChangeChannelRequest()
 {
-    if (!(getEnableCommands() && getEnablePolling())) {
+    if (!(getEnableCommands() || getEnablePolling())) {
         return false;
     }
 
diff --git a/lib/Hoymiles/src/inverters/HMT_Abstract.cpp b/lib/Hoymiles/src/inverters/HMT_Abstract.cpp
index 9aa2d09..b561ee7 100644
--- a/lib/Hoymiles/src/inverters/HMT_Abstract.cpp
+++ b/lib/Hoymiles/src/inverters/HMT_Abstract.cpp
@@ -16,7 +16,7 @@ HMT_Abstract::HMT_Abstract(HoymilesRadio* radio, uint64_t serial)
 
 bool HMT_Abstract::sendChangeChannelRequest()
 {
-    if (!(getEnableCommands() && getEnablePolling())) {
+    if (!(getEnableCommands() || getEnablePolling())) {
         return false;
     }