diff --git a/CHANGELOG b/CHANGELOG
index d89ab2b86..5d54de0f9 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -15,6 +15,7 @@ CHANGELOG Roundcube Webmail
 - Plugin API: improved 'abort' flag handling, added 'result' item in some hooks (#1486914)
 - Fix: contact group input is empty when using rename action more than once on the same group record
 - Fix "Server Error! (Not Found)" when using utils/save-pref action (#1487023)
+- Fix handling of Thunderbird's vCards (#1487024)
 
 RELEASE 0.4.1
 -------------
diff --git a/program/include/rcube_vcard.php b/program/include/rcube_vcard.php
index 0eb7a780d..9bbc32b3c 100644
--- a/program/include/rcube_vcard.php
+++ b/program/include/rcube_vcard.php
@@ -218,7 +218,9 @@ class rcube_vcard
       if ($in_vcard_block && !empty($line))
         $vcard_block .= $line . "\n";
 
-      if (trim($line) == 'END:VCARD') {
+      $line = trim($line);
+
+      if (preg_match('/^END:VCARD$/i', $line)) {
         // parse vcard
         $obj = new rcube_vcard(self::cleanup($vcard_block), $charset);
         if (!empty($obj->displayname))
@@ -226,7 +228,7 @@ class rcube_vcard
 
         $in_vcard_block = false;
       }
-      else if (trim($line) == 'BEGIN:VCARD') {
+      else if (preg_match('/^BEGIN:VCARD$/i', $line)) {
         $vcard_block = $line . "\n";
         $in_vcard_block = true;
       }