diff --git a/utils/atj2137/adfuload/adfuload.c b/utils/atj2137/adfuload/adfuload.c
index 82bbc9d100..6471a53eb8 100644
--- a/utils/atj2137/adfuload/adfuload.c
+++ b/utils/atj2137/adfuload/adfuload.c
@@ -74,6 +74,7 @@ static int send_msc_cmd(libusb_device_handle *hdev, void *cbwcb, uint32_t data_l
     struct CBW_t cbw;
     int ret, repeat, transferred;
 
+    repeat = 0;
     memset(&cbw, 0, sizeof(cbw));
     cbw.dCBWSignature = CBW_SIGNATURE;
     cbw.dCBWTag = 0;
diff --git a/utils/rk27utils/rkusbtool/rkusbtool.c b/utils/rk27utils/rkusbtool/rkusbtool.c
index afe6171e64..a28f217e30 100644
--- a/utils/rk27utils/rkusbtool/rkusbtool.c
+++ b/utils/rk27utils/rkusbtool/rkusbtool.c
@@ -75,6 +75,7 @@ static int send_msc_cmd(libusb_device_handle *hdev, struct CBWCB_t *cbwcb, uint3
     int ret, repeat, transferred;
     static uint32_t tag = 0xdaefbc01;
 
+    repeat = 0;
     memset(&cbw, 0, sizeof(cbw));
     cbw.dCBWSignature = CBW_SIGNATURE;
     cbw.dCBWTag = tag++;