diff --git a/configure.ac b/configure.ac
index 170ff741b..9080130f2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -541,7 +541,7 @@ AC_MSG_RESULT([${OPENTHREAD_ENABLE_SPI}])
 AC_SUBST(OPENTHREAD_ENABLE_NCP_UART)
 AM_CONDITIONAL([OPENTHREAD_ENABLE_NCP_UART], [test "${with_ncp_bus}"  = "uart"])
 AC_DEFINE_UNQUOTED([OPENTHREAD_ENABLE_NCP_UART],[${OPENTHREAD_ENABLE_NCP_UART}],[Define to 1 to enable the NCP UART interface.])
-AC_MSG_CHECKING([sould NCP support UART])
+AC_MSG_CHECKING([should NCP support UART])
 AC_MSG_RESULT([${OPENTHREAD_ENABLE_UART}])
 
 #