diff --git a/source/server/configuration_impl.cc b/source/server/configuration_impl.cc
index 4e3bbc4c2f8bf..e1e6ccf7a3e3a 100644
--- a/source/server/configuration_impl.cc
+++ b/source/server/configuration_impl.cc
@@ -192,7 +192,7 @@ WatchdogImpl::WatchdogImpl(const envoy::config::bootstrap::v3::Watchdog& watchdo
 
 InitialImpl::InitialImpl(const envoy::config::bootstrap::v3::Bootstrap& bootstrap,
                          const Options& options)
-    : enable_deprecated_v2_api_(options.bootstrapVersion() == 2) {
+    : enable_deprecated_v2_api_(options.bootstrapVersion() == 2u) {
   const auto& admin = bootstrap.admin();
   admin_.access_log_path_ = admin.access_log_path();
   admin_.profile_path_ =