diff --git a/components/DAP/cmsis-dap/source/DAP.c b/components/DAP/cmsis-dap/source/DAP.c
index 9f911ab..171dda0 100644
--- a/components/DAP/cmsis-dap/source/DAP.c
+++ b/components/DAP/cmsis-dap/source/DAP.c
@@ -236,7 +236,8 @@ static uint32_t DAP_Connect(const uint8_t *request, uint8_t *response) {
 #if (DAP_SWD != 0)
     case DAP_PORT_SWD:
       DAP_Data.debug_port = DAP_PORT_SWD;
-      PORT_SWD_SETUP();
+      if (SWD_TransferSpeed != kTransfer_SPI)
+        PORT_SWD_SETUP();
       break;
 #endif
 #if (DAP_JTAG != 0)