diff --git a/cube/User/Src/cmdHandler.c b/cube/User/Src/cmdHandler.c
index 23dda2d..7698aac 100644
--- a/cube/User/Src/cmdHandler.c
+++ b/cube/User/Src/cmdHandler.c
@@ -123,7 +123,7 @@ void cmdHandlerEngine(void *handle) {
                     coloredMsg(LOG_YELLOW, "che, recv returns 0x%02x", resultRecv);
                     if (resultRecv > 0) {
                         if (receiveBuffer[strlen(receiveBuffer) - 1] == 0x0a) {
-                            receiveBuffer[strlen(receiveBuffer) = 0;
+                            receiveBuffer[strlen(receiveBuffer) - 1] = 0;
                         }
                         coloredMsg(LOG_YELLOW, "che, received: %s", receiveBuffer);
                         if (-1 == cmdExecuteCommand(receiveBuffer)) {