diff --git a/src/display/pdf_objects.js b/src/display/pdf_objects.js
index eccbe6a72..5f8edd82c 100644
--- a/src/display/pdf_objects.js
+++ b/src/display/pdf_objects.js
@@ -100,6 +100,9 @@ class PDFObjects {
    */
   resolve(objId, data = null) {
     const obj = this.#ensureObj(objId);
+    if (obj.data !== INITIAL_DATA) {
+      throw new Error(`Object already resolved ${objId}.`);
+    }
     obj.data = data;
     obj.resolve();
   }