diff --git a/buildbot/osuosl/master/config/builders.py b/buildbot/osuosl/master/config/builders.py
--- a/buildbot/osuosl/master/config/builders.py
+++ b/buildbot/osuosl/master/config/builders.py
@@ -1409,7 +1409,7 @@
     'factory' : SanitizerBuilder.getSanitizerBuildFactory(
                     timeout=1800,
                     extra_configure_args=[
-                       "-CMAKE_ARGS='-DLLVM_LIT_ARGS=-v -j256'"])},
+                       "--CMAKE_ARGS='-DLLVM_LIT_ARGS=-v -j256'"])},
 
     {'name' : "sanitizer-windows",
     'tags'  : ["sanitizer"],