diff --git a/launcher/minecraft/MinecraftInstance.cpp b/launcher/minecraft/MinecraftInstance.cpp
index a9ff4dc89..8a3f46949 100644
--- a/launcher/minecraft/MinecraftInstance.cpp
+++ b/launcher/minecraft/MinecraftInstance.cpp
@@ -437,6 +437,9 @@ QStringList MinecraftInstance::extraArguments()
     }
     auto agents = m_components->getProfile()->getAgents();
     for (auto agent : agents) {
+        if (MANAGED_AGENTS.find(agent->library()->artifactPrefix().toStdString()) != MANAGED_AGENTS.end()) {
+            continue;
+        }
         QStringList jar, temp1, temp2, temp3;
         agent->library()->getApplicableFiles(runtimeContext(), jar, temp1, temp2, temp3, getLocalLibraryPath());
         list.append("-javaagent:" + jar[0] + (agent->argument().isEmpty() ? "" : "=" + agent->argument()));