diff --git a/test/sim/sw_testcases/irq_set_all_with_pri.c b/test/sim/sw_testcases/irq_set_all_with_pri.c
index e00d3c6..fd818e4 100644
--- a/test/sim/sw_testcases/irq_set_all_with_pri.c
+++ b/test/sim/sw_testcases/irq_set_all_with_pri.c
@@ -54,6 +54,8 @@ EIRQ vector was entered 1 times
 
 *******************************************************************************/
 
+#define PRIORITY_LEVELS (MAX_PRIORITY + 1)
+
 void handler(void);
 
 int main() {