diff --git a/components/profile/trace_dump.rs b/components/profile/trace_dump.rs
index 1344b8a4ccf..5576f1af94c 100644
--- a/components/profile/trace_dump.rs
+++ b/components/profile/trace_dump.rs
@@ -10,6 +10,7 @@ use std::fs;
 use std::io::Write;
 
 /// An RAII class for writing the HTML trace dump.
+#[derive(Debug)]
 pub struct TraceDump {
     file: fs::File,
 }