diff --git a/components/tc_bus/protocol.cpp b/components/tc_bus/protocol.cpp
index 085e7d6..deb38b9 100644
--- a/components/tc_bus/protocol.cpp
+++ b/components/tc_bus/protocol.cpp
@@ -193,14 +193,11 @@ namespace esphome
                         // 81 0 00000
                         // select eeprom page of serial number
                         
-                        switch ((command >> 28) & 0xF)
+                        switch ((command >> 24) & 0xF)
                         {
                             case 1:
                                 data.type = COMMAND_TYPE_SELECT_EEPROM_PAGE;
-
-                                uint32_t thirdNibble = (command >> 24) & 0xF; // Nibble isolieren
-                                data.address = static_cast<uint8_t>(thirdNibble);
-
+                                data.address = (command >> 20) & 0xF;
                                 data.serial_number = command & 0xFFFFF;
                                 break;
                         }