diff --git a/mozilla/security/manager/pki/resources/content/MineOverlay.xul b/mozilla/security/manager/pki/resources/content/MineOverlay.xul
index aa1ba106755..7caefeca857 100644
--- a/mozilla/security/manager/pki/resources/content/MineOverlay.xul
+++ b/mozilla/security/manager/pki/resources/content/MineOverlay.xul
@@ -53,10 +53,14 @@
                    class="outlinercol-header outlinercell-inset-header" 
                    persist="hidden width ordinal" flex="1"/>
       <splitter class="tree-splitter"/>
-      <outlinercol id="issuedcol" label="&certmgr.issued;"
+      <outlinercol id="serialnumcol" label="&certmgr.serial;"
                    class="outlinercol-header outlinercell-inset-header" 
                    persist="hidden width ordinal" flex="1"/>
       <splitter class="tree-splitter"/>
+      <outlinercol id="issuedcol" label="&certmgr.issued;"
+                   class="outlinercol-header outlinercell-inset-header" 
+                   hidden="true" persist="hidden width ordinal" flex="1"/>
+      <splitter class="tree-splitter"/>
       <outlinercol id="expiredcol" label="&certmgr.expires;"
                    class="outlinercol-header outlinercell-inset-header" 
                    persist="hidden width ordinal" flex="1"/>
diff --git a/mozilla/security/manager/pki/resources/locale/en-US/certManager.dtd b/mozilla/security/manager/pki/resources/locale/en-US/certManager.dtd
index f5db086e3d7..6d8d193f27e 100644
--- a/mozilla/security/manager/pki/resources/locale/en-US/certManager.dtd
+++ b/mozilla/security/manager/pki/resources/locale/en-US/certManager.dtd
@@ -75,6 +75,7 @@
 <!ENTITY certmgr.issued "Issued On">
 <!ENTITY certmgr.expires "Expires On">
 <!ENTITY certmgr.email "E-Mail Address">
+<!ENTITY certmgr.serial "Serial Number">
 
 <!ENTITY certmgr.help.label "Help">
 <!ENTITY certmgr.ok.label "OK">