diff --git a/src/file_analysis/analyzer/x509/Plugin.cc b/src/file_analysis/analyzer/x509/Plugin.cc
index f5cd95f2f6..2f495e6337 100644
--- a/src/file_analysis/analyzer/x509/Plugin.cc
+++ b/src/file_analysis/analyzer/x509/Plugin.cc
@@ -11,7 +11,7 @@ namespace Zeek_X509 {
 
 class Plugin : public plugin::Plugin {
 public:
-	plugin::Configuration Configure()
+	plugin::Configuration Configure() override
 		{
 		AddComponent(new ::file_analysis::Component("X509", ::file_analysis::X509::Instantiate));
 		AddComponent(new ::file_analysis::Component("OCSP_REQUEST", ::file_analysis::OCSP::InstantiateRequest));