diff --git a/collector/src/rustc-fake.rs b/collector/src/rustc-fake.rs
index 83811da67..ac9c2d0e0 100644
--- a/collector/src/rustc-fake.rs
+++ b/collector/src/rustc-fake.rs
@@ -161,6 +161,7 @@ fn main() {
 
             "self-profile" => {
                 let mut cmd = Command::new(&tool);
+                cmd.arg("-Zself-profile-events=all");
                 cmd.arg("-Zself-profile=Zsp").args(&args);
 
                 assert!(cmd.status().expect("failed to spawn").success());