diff --git a/bsp/stm32f10x/applications/canapp.c b/bsp/stm32f10x/applications/canapp.c
index b04a9d628f..ba9d592247 100644
--- a/bsp/stm32f10x/applications/canapp.c
+++ b/bsp/stm32f10x/applications/canapp.c
@@ -120,9 +120,9 @@ INIT_DEVICE_EXPORT(can_bus_hook_init);
 struct can_app_struct
 {
     const char *name;
-    struct rt_event event;
     struct rt_can_filter_config *filter;
     rt_uint8_t eventopt;
+    struct rt_event event;
 };
 static struct can_app_struct can_data[2];
 static rt_err_t  can1ind(rt_device_t dev,  void *args, rt_int32_t hdr, rt_size_t size)
@@ -153,27 +153,27 @@ struct rt_can_filter_item filter2item[4] =
 };
 struct rt_can_filter_config filter1 =
 {
-    .count = 4,
-    .actived = 1,
-    .items = filter1item,
+    4,
+    1,
+    filter1item,
 };
 struct rt_can_filter_config filter2 =
 {
-    .count = 4,
-    .actived = 1,
-    .items = filter2item,
+    4,
+    1,
+    filter2item,
 };
 static struct can_app_struct can_data[2] =
 {
     {
-        .name = "bxcan1",
-        .filter = &filter1,
-        .eventopt = RT_EVENT_FLAG_OR | RT_EVENT_FLAG_CLEAR,
+        "bxcan1",
+        &filter1,
+        RT_EVENT_FLAG_OR | RT_EVENT_FLAG_CLEAR,
     },
     {
-        .name = "bxcan2",
-        .filter = &filter2,
-        .eventopt = RT_EVENT_FLAG_AND | RT_EVENT_FLAG_CLEAR,
+        "bxcan2",
+        &filter2,
+        RT_EVENT_FLAG_AND | RT_EVENT_FLAG_CLEAR,
     },
 };
 void rt_can_thread_entry(void *parameter)
diff --git a/bsp/stm32f10x/drivers/bxcan.c b/bsp/stm32f10x/drivers/bxcan.c
index 6df1a544b1..77d18c6fd0 100644
--- a/bsp/stm32f10x/drivers/bxcan.c
+++ b/bsp/stm32f10x/drivers/bxcan.c
@@ -20,6 +20,7 @@
 #endif
 #ifdef RT_USING_CAN
 
+#define inline __inline
 #ifndef STM32F10X_CL
 #define BX_CAN_FMRNUMBER 14
 #define BX_CAN2_FMRSTART 7
@@ -849,6 +850,12 @@ static rt_err_t bxmodifyfilter(struct stm_bxcan *pbxcan, struct rt_can_filter_it
     rt_int32_t fcase;
     rt_err_t res;
     rt_int32_t hdr, fbase, foff;
+    rt_uint32_t ID[2];
+    rt_uint32_t shift;
+    rt_uint32_t thisid;
+    rt_uint32_t thismask;
+    CAN_FilterInitTypeDef  CAN_FilterInitStructure;
+    CAN_FilterRegister_TypeDef *pfilterreg;
 
     fcase = (pitem->mode | (pitem->ide << 1));
     hdr = bxcanfindfilter(pbxcan, pitem, fcase, &fbase, &foff);
@@ -894,14 +901,9 @@ static rt_err_t bxmodifyfilter(struct stm_bxcan *pbxcan, struct rt_can_filter_it
             return RT_EBUSY;
         }
     }
-    rt_uint32_t ID[2];
-    rt_uint32_t shift;
-    rt_uint32_t thisid;
-    rt_uint32_t thismask;
-    CAN_FilterInitTypeDef  CAN_FilterInitStructure;
 
     pitem->hdr =  hdr;
-    CAN_FilterRegister_TypeDef *pfilterreg = &((CAN_FilterRegister_TypeDef *)pbxcan->mfrbase)[fbase];
+    pfilterreg = &((CAN_FilterRegister_TypeDef *)pbxcan->mfrbase)[fbase];
     ID[0] = pfilterreg->FR1;
     ID[1] = pfilterreg->FR2;
     CAN_FilterInitStructure.CAN_FilterNumber = (pfilterreg - &CAN1->sFilterRegister[0]);
@@ -1152,7 +1154,6 @@ static rt_err_t control(struct rt_can_device *can, int cmd, void *arg)
         break;
     case RT_CAN_CMD_SET_FILTER:
         return setfilter(pbxcan, (struct rt_can_filter_config *) arg);
-        break;
     case RT_CAN_CMD_SET_MODE:
         argval = (rt_uint32_t) arg;
         if (argval != RT_CAN_MODE_NORMAL ||
@@ -1306,27 +1307,30 @@ static const struct rt_can_ops canops =
 #ifdef USING_BXCAN1
 static struct stm_bxcan bxcan1data =
 {
-    .reg = CAN1,
-    .mfrbase = (void *) &CAN1->sFilterRegister[0],
-    .sndirq = CAN1_TX_IRQn,
-    .rcvirq0 = CAN1_RX0_IRQn,
-    .rcvirq1 = CAN1_RX1_IRQn,
-    .errirq =  CAN1_SCE_IRQn,
-    .alocmask = {0, 0},
-    .filtercnt = BX_CAN2_FMRSTART,
-    .fifo1filteroff = 7,
-    .filtermap = {
-        [0] = {
-            .id32mask_cnt = 0,
-            .id32bit_cnt = 0,
-            .id16mask_cnt = 2,
-            .id16bit_cnt = 24,
+    CAN1,
+    (void *) &CAN1->sFilterRegister[0],
+    CAN1_TX_IRQn,
+    CAN1_RX0_IRQn,
+    CAN1_RX1_IRQn,
+    CAN1_SCE_IRQn,
+    {
+        0,
+    },
+    {0, 0},
+    BX_CAN2_FMRSTART,
+    7,
+    {
+        {
+            0,
+            0,
+            2,
+            24,
         },
-        [1] = {
-            .id32mask_cnt = 0,
-            .id32bit_cnt = 0,
-            .id16mask_cnt = 2,
-            .id16bit_cnt = 24,
+        {
+            0,
+            0,
+            2,
+            24,
         },
     },
 };
@@ -1444,27 +1448,30 @@ void CAN1_SCE_IRQHandler(void)
 #ifdef USING_BXCAN2
 static struct stm_bxcan bxcan2data =
 {
-    .reg = CAN2,
-    .mfrbase = (void *) &CAN1->sFilterRegister[BX_CAN2_FMRSTART],
-    .sndirq = CAN2_TX_IRQn,
-    .rcvirq0 = CAN2_RX0_IRQn,
-    .rcvirq1 = CAN2_RX1_IRQn,
-    .errirq =  CAN2_SCE_IRQn,
-    .alocmask = {0, 0},
-    .filtercnt = BX_CAN_FMRNUMBER - BX_CAN2_FMRSTART,
-    .fifo1filteroff = 7,
-    .filtermap = {
-        [0] = {
-            .id32mask_cnt = 0,
-            .id32bit_cnt = 0,
-            .id16mask_cnt = 2,
-            .id16bit_cnt = 24,
+    CAN2,
+    (void *) &CAN1->sFilterRegister[BX_CAN2_FMRSTART],
+    CAN2_TX_IRQn,
+    CAN2_RX0_IRQn,
+    CAN2_RX1_IRQn,
+    CAN2_SCE_IRQn,
+    {
+        0,
+    }
+    {0, 0},
+    BX_CAN_FMRNUMBER - BX_CAN2_FMRSTART,
+    7,
+    {
+        {
+            0,
+            0,
+            2,
+            24,
         },
-        [1] = {
-            .id32mask_cnt = 0,
-            .id32bit_cnt = 0,
-            .id16mask_cnt = 2,
-            .id16bit_cnt = 24,
+        {
+            0,
+            0,
+            2,
+            24,
         },
     },
 };
diff --git a/bsp/stm32f10x/project.uvprojx b/bsp/stm32f10x/project.uvprojx
index ec401a6ee7..1624d7c1cb 100644
--- a/bsp/stm32f10x/project.uvprojx
+++ b/bsp/stm32f10x/project.uvprojx
@@ -361,7 +361,7 @@
             <wLevel>0</wLevel>
             <uThumb>0</uThumb>
             <uSurpInc>0</uSurpInc>
-            <uC99>1</uC99>
+            <uC99>0</uC99>
             <useXO>0</useXO>
             <v6Lang>0</v6Lang>
             <v6LangP>0</v6LangP>