diff --git a/comid/example_cca_realm_refval_test.go b/comid/example_cca_realm_refval_test.go
index 6150ff89..e087f09e 100644
--- a/comid/example_cca_realm_refval_test.go
+++ b/comid/example_cca_realm_refval_test.go
@@ -135,11 +135,14 @@ func extractRealmMeasurements(r *IntegrityRegisters) error {
 	if r == nil {
 		return fmt.Errorf("no integrity registers")
 	}
+
 	for i, r := range r.m {
 		switch t := i.(type) {
 		case string:
 			fmt.Printf("Index: %s\n", t)
-			extractRealmDigests(r)
+			if err := extractRealmDigests(r); err != nil {
+				return fmt.Errorf("invalid Digests for key: %s, %v", t, err)
+			}
 		default:
 			return fmt.Errorf("unexpected type for index: %T", t)
 		}
@@ -150,7 +153,7 @@ func extractRealmMeasurements(r *IntegrityRegisters) error {
 func extractRealmDigests(digests Digests) error {
 
 	if err := digests.Valid(); err != nil {
-		return fmt.Errorf("invalid digtests %w:", err)
+		return fmt.Errorf("invalid digest: %v", err)
 	}
 	for _, d := range digests {
 		fmt.Printf("Alg: %s\n", d.AlgIDToString())