diff --git a/src/mux_fcgi.c b/src/mux_fcgi.c
index ddb2a60..f938a57 100644
--- a/src/mux_fcgi.c
+++ b/src/mux_fcgi.c
@@ -335,7 +335,7 @@
 	{ /* end */ }
 };
 
-static struct trace_source trace_fcgi = {
+static struct trace_source trace_fcgi __read_mostly = {
 	.name = IST("fcgi"),
 	.desc = "FastCGI multiplexer",
 	.arg_def = TRC_ARG1_CONN,  // TRACE()'s first argument is always a connection