diff --git a/test/libcxx/test/config.py b/test/libcxx/test/config.py
index 5e40c397..d7e24fc7 100644
--- a/test/libcxx/test/config.py
+++ b/test/libcxx/test/config.py
@@ -444,7 +444,7 @@ class Configuration(object):
             else:
                 self.cxx.link_flags += ['-lgcc_s']
         elif sys.platform.startswith('freebsd'):
-            self.cxx.link_flags += ['-lc', '-lm', '-pthread', '-lgcc_s']
+            self.cxx.link_flags += ['-lc', '-lm', '-lpthread', '-lgcc_s']
         else:
             self.lit_config.fatal("unrecognized system: %r" % sys.platform)