diff --git a/certs_manager.cpp b/certs_manager.cpp
index 76ce09f..e1774b6 100644
--- a/certs_manager.cpp
+++ b/certs_manager.cpp
@@ -118,6 +118,11 @@
     {
         elog<NotAllowed>(Reason("Certificate already exist"));
     }
+    else if (certType == phosphor::certs::AUTHORITY &&
+             installedCerts.size() >= AUTHORITY_CERTIFICATES_LIMIT)
+    {
+        elog<NotAllowed>(Reason("Certificates limit reached"));
+    }
 
     auto certObjectPath = objectPath + '/' + std::to_string(certIdCounter++);