diff --git a/src/pthread/mod.rs b/src/pthread/mod.rs
index 6b67d63358..24959e1cf4 100644
--- a/src/pthread/mod.rs
+++ b/src/pthread/mod.rs
@@ -317,6 +317,9 @@ pub unsafe fn exit_current_thread(retval: Retval) -> ! {
     unsafe { header::tls::run_all_destructors() };
 
     let this = current_thread().expect("failed to obtain current thread when exiting");
+
+    crate::sync::pthread_mutex::mark_robust_mutexes_dead(this);
+
     let stack_base = this.stack_base;
     let stack_size = this.stack_size;