diff --git a/xmltest.cpp b/xmltest.cpp
index a7dbc25..ac0d85c 100644
--- a/xmltest.cpp
+++ b/xmltest.cpp
@@ -2050,6 +2050,18 @@
 			XMLTest("Stack overflow prevented.", XML_ELEMENT_DEPTH_EXCEEDED, doc.ErrorID());
 		}
 	}
+    {
+        const char* TESTS[] = {
+            "./resources/xmltest-5662204197076992.xml",     // Security-level performance issue.
+            0
+        };
+        for (int i = 0; TESTS[i]; ++i) {
+            XMLDocument doc;
+            doc.LoadFile(TESTS[i]);
+            // Need only not crash / lock up.
+            XMLTest("Fuzz attack prevented.", true, true);
+        }
+    }
 	{
 		// Crashing reported via email.
 		const char* xml =