diff --git a/services/std_svc/sdei/sdei_intr_mgmt.c b/services/std_svc/sdei/sdei_intr_mgmt.c
index 4551a8b..42bf46d 100644
--- a/services/std_svc/sdei/sdei_intr_mgmt.c
+++ b/services/std_svc/sdei/sdei_intr_mgmt.c
@@ -475,8 +475,10 @@
 	sdei_cpu_state_t *state;
 
 	/* Validate preempted security state */
-	if ((preempted_sec_state != SECURE) || (preempted_sec_state != NON_SECURE))
+	if ((preempted_sec_state != SECURE) &&
+			(preempted_sec_state != NON_SECURE)) {
 		return -1;
+	}
 
 	/* Can't dispatch if events are masked on this PE */
 	state = sdei_get_this_pe_state();