diff --git a/tcpdi_parser.php b/tcpdi_parser.php
index 1e26664..407a211 100644
--- a/tcpdi_parser.php
+++ b/tcpdi_parser.php
@@ -483,7 +483,7 @@ protected function decodeXrefStream($startxref, $xref=array()) {
             $v = $sarr[$key];
             if (($key == '/Type') AND ($v[0] == PDF_TYPE_TOKEN AND ($v[1] == 'XRef'))) {
                 $valid_crs = true;
-            } elseif (($key == '/Index') AND ($v[0] == PDF_TYPE_ARRAY AND count($v[1] >= 2))) {
+            } elseif (($key == '/Index') AND ($v[0] == PDF_TYPE_ARRAY AND intval($v[1] >= 2))) {
                 // first object number in the subsection
                 $index_first = intval($v[1][0][1]);
                 // number of entries in the subsection