diff --git a/Ubiquitous/XiUOS/board/ok1052-c/third_party_driver/semc/connect_semc.c b/Ubiquitous/XiUOS/board/ok1052-c/third_party_driver/semc/connect_semc.c
index 1f05cd4ed..2477fb2f6 100644
--- a/Ubiquitous/XiUOS/board/ok1052-c/third_party_driver/semc/connect_semc.c
+++ b/Ubiquitous/XiUOS/board/ok1052-c/third_party_driver/semc/connect_semc.c
@@ -5,7 +5,7 @@
 #define EXAMPLE_SEMC SEMC
 #define EXAMPLE_SEMC_START_ADDRESS (0x80000000U)
 #define EXAMPLE_SEMC_CLK_FREQ CLOCK_GetFreq(kCLOCK_SemcClk)
-#define SEMC_SRAM_SIZE (32 * 1024)
+#define SEMC_SRAM_SIZE (32 * 1024 * 1024)
 
 status_t BOARD_InitSEMC(void)
 {
diff --git a/Ubiquitous/XiUOS/kernel/kernel_test/extsram_test.c b/Ubiquitous/XiUOS/kernel/kernel_test/extsram_test.c
index 62402162a..d17b63a29 100644
--- a/Ubiquitous/XiUOS/kernel/kernel_test/extsram_test.c
+++ b/Ubiquitous/XiUOS/kernel/kernel_test/extsram_test.c
@@ -13,7 +13,7 @@
 // /* sram size */
 // #define SRAM_SIZE            ((uint32_t)0x00100000)
 /* sram size */
-#define SRAM_SIZE            ((uint32_t)0x008000)
+#define SRAM_SIZE            ((uint32_t)0x2000000)
 
 int sram_test(void)
 {