diff --git a/targets/TARGET_Realtek/TARGET_AMEBA/TARGET_RTL8195A/device/TOOLCHAIN_ARM_STD/rtl8195a.sct b/targets/TARGET_Realtek/TARGET_AMEBA/TARGET_RTL8195A/device/TOOLCHAIN_ARM_STD/rtl8195a.sct
index 604a20c7ec..045b8ccfe5 100644
--- a/targets/TARGET_Realtek/TARGET_AMEBA/TARGET_RTL8195A/device/TOOLCHAIN_ARM_STD/rtl8195a.sct
+++ b/targets/TARGET_Realtek/TARGET_AMEBA/TARGET_RTL8195A/device/TOOLCHAIN_ARM_STD/rtl8195a.sct
@@ -54,13 +54,13 @@ LR_IRAM 0x10007000 (0x70000 - 0x7000) {
   }
 }
 
-;LR_TCM 0x1FFF0000 0x10000 {
-;    TCM_OVERLAY 0x1FFF0000 0x10000 {
-;        lwip_mem.o(.bss*)
-;        lwip_memp.o(.bss*)
-;        *.o(.tcm.heap*)
-;    }
-;}
+LR_TCM 0x1FFF0000 0x10000 {
+    TCM_OVERLAY 0x1FFF0000 0x10000 {
+        lwip_mem.o(.bss*)
+        lwip_memp.o(.bss*)
+        *.o(.tcm.heap*)
+    }
+}
 
 LR_DRAM 0x30000000 0x200000 {
 
diff --git a/targets/TARGET_Realtek/TARGET_AMEBA/sdk/common/drivers/wlan/realtek/include/autoconf.h b/targets/TARGET_Realtek/TARGET_AMEBA/sdk/common/drivers/wlan/realtek/include/autoconf.h
index 3079a12357..3d69fff618 100644
--- a/targets/TARGET_Realtek/TARGET_AMEBA/sdk/common/drivers/wlan/realtek/include/autoconf.h
+++ b/targets/TARGET_Realtek/TARGET_AMEBA/sdk/common/drivers/wlan/realtek/include/autoconf.h
@@ -107,7 +107,7 @@
 
 #if defined(CONFIG_PLATFORM_AMEBA_X)
 	#if !defined(CONFIG_PLATFORM_8711B)
-		#define CONFIG_USE_TCM_HEAP 0					/* USE TCM HEAP */
+		#define CONFIG_USE_TCM_HEAP 1					/* USE TCM HEAP */
 	#endif
 	#define CONFIG_RECV_TASKLET_THREAD
 	#define CONFIG_XMIT_TASKLET_THREAD
diff --git a/targets/TARGET_Realtek/TARGET_AMEBA/sdk/os/os_dep/include/osdep_service.h b/targets/TARGET_Realtek/TARGET_AMEBA/sdk/os/os_dep/include/osdep_service.h
index d8d0600018..68cba7a6ef 100644
--- a/targets/TARGET_Realtek/TARGET_AMEBA/sdk/os/os_dep/include/osdep_service.h
+++ b/targets/TARGET_Realtek/TARGET_AMEBA/sdk/os/os_dep/include/osdep_service.h
@@ -32,7 +32,7 @@ extern "C" {
 
 #if defined(CONFIG_PLATFORM_8195A)
 	#ifndef CONFIG_USE_TCM_HEAP
-	#define CONFIG_USE_TCM_HEAP 0					/* USE TCM HEAP */
+	#define CONFIG_USE_TCM_HEAP 1					/* USE TCM HEAP */
 	#endif
 	#define USE_MUTEX_FOR_SPINLOCK	1
 #endif