Index: autofirma-1.8/afirma-simple-plugin-validatecerts/src/main/java/es/gob/afirma/plugin/certvalidation/validation/OcspHelper.java
===================================================================
--- autofirma-1.8.orig/afirma-simple-plugin-validatecerts/src/main/java/es/gob/afirma/plugin/certvalidation/validation/OcspHelper.java
+++ autofirma-1.8/afirma-simple-plugin-validatecerts/src/main/java/es/gob/afirma/plugin/certvalidation/validation/OcspHelper.java
@@ -32,7 +32,7 @@ import java.util.List;
 
 import org.bouncycastle.asn1.ASN1InputStream;
 import org.bouncycastle.asn1.ASN1Sequence;
-import org.bouncycastle.asn1.DERIA5String;
+import org.bouncycastle.asn1.ASN1IA5String;
 import org.bouncycastle.asn1.DEROctetString;
 import org.bouncycastle.asn1.x500.X500Name;
 import org.bouncycastle.asn1.x509.AccessDescription;
@@ -314,7 +314,7 @@ final class OcspHelper {
                 for (final AccessDescription accessDescription : accessDescriptions) {
                     final GeneralName gn = accessDescription.getAccessLocation();
                     if (gn.getTagNo() == GeneralName.uniformResourceIdentifier) {
-                        final DERIA5String str = DERIA5String.getInstance(gn.getName());
+                        final ASN1IA5String str = ASN1IA5String.getInstance(gn.getName());
                         final String accessLocation = str.getString();
                         ocspUrlList.add(accessLocation);
                     }