diff --git a/test/message/testcfg.py b/test/message/testcfg.py
index bd56a8eba8c4ce..4be454b55c9053 100644
--- a/test/message/testcfg.py
+++ b/test/message/testcfg.py
@@ -43,6 +43,7 @@ def __init__(self, path, file, expected, arch, mode, context, config):
     self.config = config
     self.arch = arch
     self.mode = mode
+    self.parallel = True
 
   def IgnoreLine(self, str):
     """Ignore empty lines and valgrind output."""
diff --git a/test/pseudo-tty/testcfg.py b/test/pseudo-tty/testcfg.py
index ad9461f026366f..df380ad31eff1e 100644
--- a/test/pseudo-tty/testcfg.py
+++ b/test/pseudo-tty/testcfg.py
@@ -48,6 +48,7 @@ def __init__(self, path, file, expected, input_arg, arch, mode, context, config)
     self.config = config
     self.arch = arch
     self.mode = mode
+    self.parallel = True
 
   def IgnoreLine(self, str_arg):
     """Ignore empty lines and valgrind output."""