diff --git a/pkg/referrerstore/oras/cosign.go b/pkg/referrerstore/oras/cosign.go
index 3db4b23bb..4f6fc2457 100644
--- a/pkg/referrerstore/oras/cosign.go
+++ b/pkg/referrerstore/oras/cosign.go
@@ -46,7 +46,7 @@ func getCosignReferences(ctx context.Context, subjectReference common.Reference,
 			return nil, nil
 		}
 		evictOnError(ctx, err, subjectReference.Original)
-		return nil, re.ErrorCodeRepositoryOperationFailure.WithDetail(fmt.Sprintf("Failed to validate the signature of the artifact: %+v", subjectReference)).WithError(err)
+		return nil, re.ErrorCodeRepositoryOperationFailure.WithDetail(fmt.Sprintf("Failed to validate existence of Cosign signature of the artifact: %+v", subjectReference)).WithError(err)
 	}
 
 	references = append(references, ocispecs.ReferenceDescriptor{
diff --git a/pkg/verifier/cosign/cosign.go b/pkg/verifier/cosign/cosign.go
index cba6a1e9a..86442859a 100644
--- a/pkg/verifier/cosign/cosign.go
+++ b/pkg/verifier/cosign/cosign.go
@@ -224,7 +224,7 @@ func (v *cosignVerifier) verifyInternal(ctx context.Context, subjectReference co
 	// get the reference manifest (cosign oci image)
 	referenceManifest, err := referrerStore.GetReferenceManifest(ctx, subjectReference, referenceDescriptor)
 	if err != nil {
-		return errorToVerifyResult(v.name, v.verifierType, re.ErrorCodeVerifyPluginFailure.WithDetail(fmt.Sprintf("Failed to get artifact metadata for %s", referenceDescriptor.Digest)).WithError(err)), nil
+		return errorToVerifyResult(v.name, v.verifierType, re.ErrorCodeVerifyPluginFailure.WithDetail(fmt.Sprintf("Failed to get Cosign signature metadata for %s", referenceDescriptor.Digest)).WithError(err)), nil
 	}
 
 	// manifest must be an OCI Image
@@ -540,7 +540,7 @@ func verifyWithKeys(ctx context.Context, keysMap map[PKKey]keymanagementprovider
 		if pubKey.ProviderType == azurekeyvault.ProviderName {
 			hashType, sig, err = processAKVSignature(sigEncoded, sig, pubKey.Key, payload, staticOpts)
 			if err != nil {
-				return verifications, false, re.ErrorCodeVerifyPluginFailure.WithDetail("Failed to validate the Cosign signature generated by AKV").WithError(err)
+				return verifications, false, re.ErrorCodeVerifyPluginFailure.WithDetail("Failed to validate the Cosign signature generated by Azure Key Vault").WithError(err)
 			}
 		}