diff --git a/Marlin/src/HAL/STM32F1/HAL.h b/Marlin/src/HAL/STM32F1/HAL.h
index 4f430ab4d9..94b0ad7ead 100644
--- a/Marlin/src/HAL/STM32F1/HAL.h
+++ b/Marlin/src/HAL/STM32F1/HAL.h
@@ -53,7 +53,7 @@
 // ------------------------
 
 #ifndef STM32_FLASH_SIZE
-  #if EITHER(MCU_STM32F103RE, MCU_STM32F103VE)
+  #if ANY(MCU_STM32F103RE, MCU_STM32F103VE, MCU_STM32F103ZE)
     #define STM32_FLASH_SIZE 512
   #else
     #define STM32_FLASH_SIZE 256