diff --git a/testing/mozbase/Makefile.in b/testing/mozbase/Makefile.in
index f2b77a3f502..590c276fe35 100644
--- a/testing/mozbase/Makefile.in
+++ b/testing/mozbase/Makefile.in
@@ -9,10 +9,6 @@ VPATH = @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
-PYTHON_UNIT_TESTS := \
-  test.py \
-  $(NULL)
-
 include $(topsrcdir)/config/rules.mk
 
 # Harness packages from the srcdir;