diff --git a/lib/BirthdayCalendarGenerator.php b/lib/BirthdayCalendarGenerator.php
index 9c2c7b839..26c62e401 100644
--- a/lib/BirthdayCalendarGenerator.php
+++ b/lib/BirthdayCalendarGenerator.php
@@ -45,6 +45,13 @@ class BirthdayCalendarGenerator {
      */
     protected $defaultYear = 1900;
 
+    /**
+     * Output format for the SUMMARY.
+     *
+     * @var string
+     */
+    protected $format = '%1$s\'s Birthday';
+
     /**
      * Creates the generator.
      *
@@ -121,6 +128,19 @@ function setTimeZone(DateTimeZone $timeZone) {
 
     }
 
+    /**
+     * Sets the output format for the SUMMARY
+     *
+     * @param string $format
+     *
+     * @return void
+     */
+    function setFormat($format) {
+
+        $this->format = $format;
+
+    }
+
     /**
      * Parses the input data and returns a VCALENDAR.
      *
@@ -163,7 +183,7 @@ function getResult() {
 
             // Create event.
             $event = $calendar->add('VEVENT', [
-                'SUMMARY'      => $object->FN->getValue() .'\'s Birthday',
+                'SUMMARY'      => sprintf($this->format, $object->FN->getValue()),
                 'DTSTART'      => new \DateTime($object->BDAY->getValue(), $this->timeZone),
                 'RRULE'        => 'FREQ=YEARLY',
                 'TRANSP'       => 'TRANSPARENT',
@@ -181,6 +201,4 @@ function getResult() {
 
     }
 
-
-
 }
diff --git a/tests/VObject/BirthdayCalendarGeneratorTest.php b/tests/VObject/BirthdayCalendarGeneratorTest.php
index b612c3b1a..3108ba6f8 100644
--- a/tests/VObject/BirthdayCalendarGeneratorTest.php
+++ b/tests/VObject/BirthdayCalendarGeneratorTest.php
@@ -317,4 +317,43 @@ function testVcardStringWithNoBirthday() {
 
     }
 
+    function testVcardStringWithValidBirthdayLocalized() {
+
+        $input = <<<VCF
+BEGIN:VCARD
+VERSION:3.0
+N:Gump;Forrest;;Mr.
+FN:Forrest Gump
+BDAY:19850407
+UID:foo
+END:VCARD
+VCF;
+
+        $expected = <<<ICS
+BEGIN:VCALENDAR
+VERSION:2.0
+BEGIN:VEVENT
+SUMMARY:Forrest Gump's Geburtstag
+DTSTART:19850407T000000Z
+RRULE:FREQ=YEARLY
+TRANSP:TRANSPARENT
+X-SABRE-BDAY;X-SABRE-VCARD-UID=foo;X-SABRE-VCARD-FN=Forrest Gump:BDAY
+END:VEVENT
+END:VCALENDAR
+ICS;
+
+        $this->generator->setObjects($input);
+        $this->generator->setFormat('%1$s\'s Geburtstag');
+        $output = $this->generator->getResult();
+
+        $this->assertVObjEquals(
+            $expected,
+            $output
+        );
+
+        // Reset to default format
+        $this->generator->setFormat('%1$s\'s Birthday');
+
+    }
+
 }