diff --git a/samples/bugs/PullRequestXrefSubsectionMultipleSpaces.pdf b/samples/bugs/PullRequestXrefSubsectionMultipleSpaces.pdf
new file mode 100644
index 00000000..508c1974
Binary files /dev/null and b/samples/bugs/PullRequestXrefSubsectionMultipleSpaces.pdf differ
diff --git a/src/Smalot/PdfParser/RawData/RawDataParser.php b/src/Smalot/PdfParser/RawData/RawDataParser.php
index ec8d01e5..0df21551 100644
--- a/src/Smalot/PdfParser/RawData/RawDataParser.php
+++ b/src/Smalot/PdfParser/RawData/RawDataParser.php
@@ -169,7 +169,7 @@ protected function decodeXref(string $pdfData, int $startxref, array $xref = [],
         // initialize object number
         $obj_num = 0;
         // search for cross-reference entries or subsection
-        while (preg_match('/([0-9]+)[\x20]([0-9]+)[\x20]?([nf]?)(\r\n|[\x20]?[\r\n])/', $pdfData, $matches, \PREG_OFFSET_CAPTURE, $offset) > 0) {
+        while (preg_match('/([0-9]+)[\x20]+([0-9]+)[\x20]*([nf]?)(\r\n|[\x20]*[\r\n])/', $pdfData, $matches, \PREG_OFFSET_CAPTURE, $offset) > 0) {
             if ($matches[0][1] != $offset) {
                 // we are on another section
                 break;
diff --git a/tests/PHPUnit/Integration/DocumentIssueFocusTest.php b/tests/PHPUnit/Integration/DocumentIssueFocusTest.php
index 7c7fe7e6..3d5d3de5 100644
--- a/tests/PHPUnit/Integration/DocumentIssueFocusTest.php
+++ b/tests/PHPUnit/Integration/DocumentIssueFocusTest.php
@@ -111,4 +111,11 @@ public function testPDFDocEncodingDecode(): void
         $testSubject = '•†‡…—–ƒ⁄‹›−‰„“”‘’‚™ŁŒŠŸŽıłœšž';
         self::assertStringContainsString($testSubject, $details['Subject']);
     }
+
+    public function testParseFileWithXrefSubsectionHavingMultipleSpaces(): void
+    {
+        $document = (new Parser())->parseFile($this->rootDir.'/samples/bugs/PullRequestXrefSubsectionMultipleSpaces.pdf');
+
+        self::assertCount(1, $document->getPages());
+    }
 }