2 files changed, 5 insertions, 2 deletions
diff --git a/base/common/src/com/netscape/cmscore/cert/CertDateCompare.java b/base/common/src/com/netscape/cmscore/cert/CertDateCompare.java
index 30f806ea2..c39db40d0 100644
--- a/base/common/src/com/netscape/cmscore/cert/CertDateCompare.java
+++ b/base/common/src/com/netscape/cmscore/cert/CertDateCompare.java
@@ -28,7 +28,10 @@ import netscape.security.x509.X509CertImpl;
  * @author kanda
  * @version $Revision$, $Date$
  */
-public class CertDateCompare implements Comparator<X509CertImpl> {
+public class CertDateCompare implements Comparator<X509CertImpl>, java.io.Serializable {
+
+    private static final long serialVersionUID = -1784015027375808580L;
+
     public CertDateCompare() {
     }
 
diff --git a/base/common/src/com/netscape/cmscore/cert/CertUtils.java b/base/common/src/com/netscape/cmscore/cert/CertUtils.java
index b7942e5a1..37444eff5 100644
--- a/base/common/src/com/netscape/cmscore/cert/CertUtils.java
+++ b/base/common/src/com/netscape/cmscore/cert/CertUtils.java
@@ -842,7 +842,7 @@ public class CertUtils {
             return false;
         }
 
-        if (certusage == "")
+        if (certusage == null || certusage.equals(""))
             CMS.debug("CertUtils: verifySystemCertByNickname(): required certusage not defined, getting current certusage");
         CMS.debug("CertUtils: verifySystemCertByNickname(): calling isCertValid()");
         try {