IAR error when using MSPware for Watchdog

FYI...I do not see the WDT_A_CTL_SSEL_4 defined anywhere.  I get errors when compiling using IAR Embedded Workbench.

//*****************************************************************************
//
// The following are values that can be passed to the clockSelect parameter for
// functions: WDT_A_watchdogTimerInit(), and WDT_A_intervalTimerInit().
//
//*****************************************************************************
#define WDT_A_CLOCKSOURCE_SMCLK                                     (WDT_A_CTL_SSEL_0)
#define WDT_A_CLOCKSOURCE_ACLK                                      (WDT_A_CTL_SSEL_1)
#define WDT_A_CLOCKSOURCE_VLOCLK                                    (WDT_A_CTL_SSEL_2)
#define WDT_A_CLOCKSOURCE_XCLK                                      (WDT_A_CTL_SSEL_3)
#define WDT_A_CLOCKSOURCE_BCLK                                      (WDT_A_CTL_SSEL_4)