diff --git a/modules/libpref/test/python.ini b/modules/libpref/test/python.ini
index dd54269c682f..e5d47ce981db 100644
--- a/modules/libpref/test/python.ini
+++ b/modules/libpref/test/python.ini
@@ -1,4 +1,3 @@
 [DEFAULT]
-subsuite = mozbuild
 
 [test_generate_static_pref_list.py]
diff --git a/taskcluster/ci/source-test/python.yml b/taskcluster/ci/source-test/python.yml
index 1ad5a2665db2..24310449b2bb 100644
--- a/taskcluster/ci/source-test/python.yml
+++ b/taskcluster/ci/source-test/python.yml
@@ -369,8 +369,6 @@ mozbuild:
             - 'build/moz.configure/**'
             - 'config/tests/**'
             - 'dom/bindings/mozwebidlcodegen/**'
-            - 'modules/libpref/init/**'
-            - 'modules/libpref/test/**'
             - 'python/mach/**'
             - 'python/mozboot/**'
             - 'python/mozbuild/**'
diff --git a/testing/testsuite-targets.mk b/testing/testsuite-targets.mk
index b07f9a8a4730..ab8813d1b615 100644
--- a/testing/testsuite-targets.mk
+++ b/testing/testsuite-targets.mk
@@ -264,11 +264,10 @@ check::
 	@echo "Starting 'mach python-test' with -j$(cores)"
 	@$(topsrcdir)/mach --log-no-times python-test -j$(cores) --subsuite default
 	@echo "Finished 'mach python-test' successfully"
-ifeq (,$(MOZ_ASAN)$(MOZ_TSAN))  # No tests run here for asan/tsan builds.
 	@echo "Starting 'mach python-test' with --python $(PYTHON3) -j$(cores)"
 	@$(topsrcdir)/mach --log-no-times python-test --python python3 -j$(cores) --subsuite default
 	@echo "Finished 'mach python-test' with py3 successfully"
-endif
+
 
 .PHONY: \
   reftest \