1 files changed, 1 insertions, 1 deletions
diff --git a/synapse/logging/opentracing.py b/synapse/logging/opentracing.py
index 185844f188..ecd51f1b4a 100644
--- a/synapse/logging/opentracing.py
+++ b/synapse/logging/opentracing.py
@@ -374,7 +374,7 @@ def init_tracer(hs: "HomeServer"):
 
     config = JaegerConfig(
         config=hs.config.jaeger_config,
-        service_name="{} {}".format(hs.config.server_name, hs.get_instance_name()),
+        service_name=f"{hs.config.server_name} {hs.get_instance_name()}",
         scope_manager=LogContextScopeManager(hs.config),
         metrics_factory=PrometheusMetricsFactory(),
     )