diff --git a/test/test_exception_storage.pass.cpp b/test/test_exception_storage.pass.cpp
index 5c29c45..bf42366 100644
--- a/test/test_exception_storage.pass.cpp
+++ b/test/test_exception_storage.pass.cpp
@@ -29,7 +29,9 @@
         std::printf("Got different globals!\n");
 
     *result = (size_t) glob1;
+#ifndef _LIBCXXABI_HAS_NO_THREADS
     sleep ( 1 );
+#endif
     return parm;
 }