diff --git a/src/core/catalog.js b/src/core/catalog.js
index d66ecb943..30fead7ad 100644
--- a/src/core/catalog.js
+++ b/src/core/catalog.js
@@ -279,19 +279,18 @@ class Catalog {
         /* suppressEncryption = */ !this.xref.encrypt?.encryptMetadata
       );
 
-      if (stream instanceof BaseStream && stream.dict instanceof Dict) {
-        const type = stream.dict.get("Type");
-        const subtype = stream.dict.get("Subtype");
-
-        if (isName(type, "Metadata") && isName(subtype, "XML")) {
-          // XXX: This should examine the charset the XML document defines,
-          // however since there are currently no real means to decode arbitrary
-          // charsets, let's just hope that the author of the PDF was reasonable
-          // enough to stick with the XML default charset, which is UTF-8.
-          const data = stringToUTF8String(stream.getString());
-          if (data) {
-            metadata = new MetadataParser(data).serializable;
-          }
+      if (
+        stream instanceof BaseStream &&
+        isDict(stream.dict, "Metadata") &&
+        isName(stream.dict.get("Subtype"), "XML")
+      ) {
+        // XXX: This should examine the charset the XML document defines,
+        // however since there are currently no real means to decode arbitrary
+        // charsets, let's just hope that the author of the PDF was reasonable
+        // enough to stick with the XML default charset, which is UTF-8.
+        const data = stringToUTF8String(stream.getString());
+        if (data) {
+          metadata = new MetadataParser(data).serializable;
         }
       }
     } catch (ex) {