diff --git a/board/STM32F401CCU6/TOS_CONFIG/tos_config.h b/board/STM32F401CCU6/TOS_CONFIG/tos_config.h
index c4799ae9..395608a2 100644
--- a/board/STM32F401CCU6/TOS_CONFIG/tos_config.h
+++ b/board/STM32F401CCU6/TOS_CONFIG/tos_config.h
@@ -15,7 +15,7 @@
 
 #define TOS_CFG_MMHEAP_EN               1u
 
-#define TOS_CFG_MMHEAP_POOL_SIZE        0x100
+#define TOS_CFG_MMHEAP_DEFAULT_POOL_SIZE        0x100
 
 #define TOS_CFG_MUTEX_EN                1u