diff --git a/projects/poppler/pdf_fuzzer.cc b/projects/poppler/pdf_fuzzer.cc
index d9cea20f9..706daf768 100644
--- a/projects/poppler/pdf_fuzzer.cc
+++ b/projects/poppler/pdf_fuzzer.cc
@@ -30,6 +30,7 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
 
   poppler::document *doc = poppler::document::load_from_raw_data((const char *)data, size);
   if (!doc || doc->is_locked()) {
+    delete doc;
     return 0;
   }