diff --git a/internal/grpcserver/interceptors.go b/internal/grpcserver/interceptors.go
index f076b2c..fb11732 100644
--- a/internal/grpcserver/interceptors.go
+++ b/internal/grpcserver/interceptors.go
@@ -29,8 +29,8 @@ func AuthInterceptor(database *sql.DB) grpc.UnaryServerInterceptor {
 			return nil, status.Error(codes.Unauthenticated, "missing metadata")
 		}
 
-		usernames := md.Get("username")
-		passwords := md.Get("password")
+		usernames := md.Get("x-engpad-username")
+		passwords := md.Get("x-engpad-password")
 		if len(usernames) == 0 || len(passwords) == 0 {
 			return nil, status.Error(codes.Unauthenticated, "missing credentials")
 		}
diff --git a/internal/grpcserver/server.go b/internal/grpcserver/server.go
index d38f6ce..4e35f5b 100644
--- a/internal/grpcserver/server.go
+++ b/internal/grpcserver/server.go
@@ -32,7 +32,7 @@ func Start(cfg Config) (*grpc.Server, error) {
 
 	tlsConfig := &tls.Config{
 		Certificates: []tls.Certificate{cert},
-		MinVersion:   tls.VersionTLS13,
+		MinVersion:   tls.VersionTLS12,
 	}
 
 	lis, err := net.Listen("tcp", cfg.Addr)