diff --git a/Marlin/src/pins/stm32f4/pins_RUMBA32_BTT.h b/Marlin/src/pins/stm32f4/pins_RUMBA32_BTT.h
index f2fc53379b..28d2dfd180 100644
--- a/Marlin/src/pins/stm32f4/pins_RUMBA32_BTT.h
+++ b/Marlin/src/pins/stm32f4/pins_RUMBA32_BTT.h
@@ -30,7 +30,7 @@
 
 #if NO_EEPROM_SELECTED
   #define I2C_EEPROM
-  #define MARLIN_EEPROM_SIZE            0x2000  // 8KB (24LC64T-I/OT)
+  #define MARLIN_EEPROM_SIZE            0x1000  // 4KB (24LC32AT-I/OT)
 #endif
 
 #if ENABLED(FLASH_EEPROM_EMULATION)