diff --git a/rt-thread/bsp/_template/cubemx_config/rtconfig.h b/rt-thread/bsp/_template/cubemx_config/rtconfig.h
index 39d315f..8141610 100644
--- a/rt-thread/bsp/_template/cubemx_config/rtconfig.h
+++ b/rt-thread/bsp/_template/cubemx_config/rtconfig.h
@@ -106,6 +106,7 @@
 //  <i>Dynamic Heap Management
 #define RT_USING_HEAP
 #define RT_USING_SMALL_MEM
+#define RT_USING_SMALL_MEM_AS_HEAP
 // </c>
 // <c1>using tiny size of memory
 //  <i>using tiny size of memory
diff --git a/rt-thread/bsp/_template/rtconfig.h b/rt-thread/bsp/_template/rtconfig.h
index 39d315f..8141610 100644
--- a/rt-thread/bsp/_template/rtconfig.h
+++ b/rt-thread/bsp/_template/rtconfig.h
@@ -106,6 +106,7 @@
 //  <i>Dynamic Heap Management
 #define RT_USING_HEAP
 #define RT_USING_SMALL_MEM
+#define RT_USING_SMALL_MEM_AS_HEAP
 // </c>
 // <c1>using tiny size of memory
 //  <i>using tiny size of memory
diff --git a/rt-thread/libcpu/arm/cortex-m33/cpuport.c b/rt-thread/libcpu/arm/cortex-m33/cpuport.c
index 44e7c28..1252fce 100644
--- a/rt-thread/libcpu/arm/cortex-m33/cpuport.c
+++ b/rt-thread/libcpu/arm/cortex-m33/cpuport.c
@@ -196,11 +196,7 @@ rt_uint8_t *rt_hw_stack_init(void       *tentry,
      *                    0: Non-secure.
      *                    1: Secure.
      */
-#ifdef ARCH_ARM_CORTEX_SECURE
     stack_frame->lr = 0xfffffffdL;
-#else
-    stack_frame->lr = 0xffffffbcL;
-#endif
     stack_frame->psplim = 0x00;
     /*
      * CONTROL register bit assignments