diff --git a/Firmware/Marlin.h b/Firmware/Marlin.h
index fc7257213..c5f8f2592 100755
--- a/Firmware/Marlin.h
+++ b/Firmware/Marlin.h
@@ -322,7 +322,7 @@ extern bool loading_flag;
 extern uint8_t usb_printing_counter;
 extern unsigned long total_filament_used;
 void save_statistics(unsigned long _total_filament_used, unsigned long _total_print_time);
-extern unsigned int heating_status;
+extern uint8_t heating_status;
 extern unsigned int status_number;
 extern unsigned int heating_status_counter;
 extern char snmm_filaments_used;
diff --git a/Firmware/Marlin_main.cpp b/Firmware/Marlin_main.cpp
index 4f8c88b3f..b90ae3105 100755
--- a/Firmware/Marlin_main.cpp
+++ b/Firmware/Marlin_main.cpp
@@ -217,7 +217,7 @@ bool prusa_sd_card_upload = false;
 unsigned int status_number = 0;
 
 unsigned long total_filament_used;
-unsigned int heating_status;
+uint8_t heating_status;
 unsigned int heating_status_counter;
 bool loading_flag = false;