diff --git a/buildbot/master/files/config/master.cfg b/buildbot/master/files/config/master.cfg
index 3b9c7e9e..55f4b938 100644
--- a/buildbot/master/files/config/master.cfg
+++ b/buildbot/master/files/config/master.cfg
@@ -104,6 +104,7 @@ mac_test_env = dict({
 
 linux_dev_factory = create_servo_factory([
     steps.ShellCommand(command=["./mach", "test-tidy", "--no-progress"], env=linux_headless_env),
+    steps.ShellCommand(command=["./mach", "test-tidy", "--no-progress", "--self-test"], env=linux_headless_env),
     steps.Compile(command=["./mach", "build", "--dev"], env=linux_headless_env),
     steps.ShellCommand(command=["./mach", "test-compiletest"], env=linux_headless_env),
     steps.ShellCommand(command=["./mach", "test-unit"], env=linux_headless_env),