diff --git a/src/Smalot/PdfParser/PDFObject.php b/src/Smalot/PdfParser/PDFObject.php
index 8d1d14de..69e2120b 100644
--- a/src/Smalot/PdfParser/PDFObject.php
+++ b/src/Smalot/PdfParser/PDFObject.php
@@ -689,7 +689,7 @@ public function getTextArray(?Page $page = null): array
                             $xobject = $page->getXObject($id);
 
                             // @todo $xobject could be a ElementXRef object, which would then throw an error
-                            if (\is_object($xobject) && $xobject instanceof self && !\in_array($xobject->getUniqueId(), self::$recursionStack)) {
+                            if (\is_object($xobject) && $xobject instanceof self && !\in_array($xobject->getUniqueId(), self::$recursionStack, true)) {
                                 // Not a circular reference.
                                 $text[] = $xobject->getText($page);
                             }
diff --git a/src/Smalot/PdfParser/RawData/RawDataParser.php b/src/Smalot/PdfParser/RawData/RawDataParser.php
index 6b04fae5..3d746caf 100644
--- a/src/Smalot/PdfParser/RawData/RawDataParser.php
+++ b/src/Smalot/PdfParser/RawData/RawDataParser.php
@@ -127,7 +127,7 @@ protected function decodeStream(string $pdfData, array $xref, array $sdic, strin
         // decode the stream
         $remaining_filters = [];
         foreach ($filters as $filter) {
-            if (\in_array($filter, $this->filterHelper->getAvailableFilters())) {
+            if (\in_array($filter, $this->filterHelper->getAvailableFilters(), true)) {
                 try {
                     $stream = $this->filterHelper->decodeFilter($filter, $stream, $this->config->getDecodeMemoryLimit());
                 } catch (\Exception $e) {