diff --git a/drivers/tee/optee/core.c b/drivers/tee/optee/core.c
index 88e23d2..9a9b697 100644
--- a/drivers/tee/optee/core.c
+++ b/drivers/tee/optee/core.c
@@ -73,7 +73,7 @@
 
 	for (idx = 0; idx < service_cnt; idx++, service++) {
 		tee_optee_ta_uuid_to_octets(loc_uuid, &service->uuid);
-		if (!memcmp(uuid, loc_uuid, sizeof(uuid)))
+		if (!memcmp(uuid, loc_uuid, sizeof(*uuid)))
 			return service;
 	}