diff --git a/compiler-rt/test/lsan/TestCases/print_threads.c b/compiler-rt/test/lsan/TestCases/print_threads.c
index b3072da93fab6..a9389412af1cc 100644
--- a/compiler-rt/test/lsan/TestCases/print_threads.c
+++ b/compiler-rt/test/lsan/TestCases/print_threads.c
@@ -2,6 +2,9 @@
 
 // XFAIL: hwasan
 
+// No pthread barriers on Darwin.
+// UNSUPPORTED: darwin
+
 #include <assert.h>
 #include <pthread.h>
 #include <sanitizer/lsan_interface.h>