diff --git a/zorg/buildbot/builders/SanitizerBuilder.py b/zorg/buildbot/builders/SanitizerBuilder.py
index b28cddcdd..17131dfb3 100644
--- a/zorg/buildbot/builders/SanitizerBuilder.py
+++ b/zorg/buildbot/builders/SanitizerBuilder.py
@@ -2,7 +2,7 @@
 from zorg.buildbot.process.factory import LLVMBuildFactory
 
 def getSanitizerBuildFactory(
-    clean=False,
+    clean=True,
     extra_depends_on_projects=[],
     extra_configure_args=None,
     env=None,