diff --git a/trace/default.c b/trace/default.c
index 3573d5b..c9b27a2 100644
--- a/trace/default.c
+++ b/trace/default.c
@@ -25,8 +25,13 @@
     return false;
 }
 
-bool trace_backend_init(const char *file)
+bool trace_backend_init(const char *events, const char *file)
 {
+    if (events) {
+        fprintf(stderr, "error: -trace events=...: "
+                "option not supported by the selected tracing backend\n");
+        return false;
+    }
     if (file) {
         fprintf(stderr, "error: -trace file=...: "
                 "option not supported by the selected tracing backend\n");