diff --git a/test/Makefile b/test/Makefile
index cfa6f2046..c7aa752b6 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -24,6 +24,8 @@ SUBDIRS =  \
 	sdp_client \
 	security_manager \
 	tlv_posix \
+	security_manager_sc \
+
 # not testing anything in source tree
 #	maths \
 # no unit tests
@@ -42,6 +44,7 @@ SUBDIRS_BLE = \
 	linked_list \
 	ring_buffer \
 	security_manager \
+	security_manager_sc \
 #	tlv_posix \
 
 # test fails
diff --git a/test/security_manager_sc/Makefile b/test/security_manager_sc/Makefile
index ff0c31127..e56f16589 100644
--- a/test/security_manager_sc/Makefile
+++ b/test/security_manager_sc/Makefile
@@ -91,20 +91,9 @@ myclean:
 	rm -f  *.o
 	rm -rf *.dSYM
 	rm -f *.gcno *.gcda
-	
+	rm -rf SM_*
+
 clean: myclean
 
 test: sm_test
-	./sm_test
-
-coverage: sm_test
-	# delete trace data
-	# find . -name "*.gcda" -type f -delete
-	# run tests
-	#./sm_test
-	# collect traces
-	lcov --capture --rc lcov_branch_coverage=1 --directory . --exclude "/Applications/*" --exclude "/Library/*" --exclude "/usr/*" --exclude "*/test/*" --output-file coverage-sm-sc.info
-	# strip path prefix such that paths start with 'btstack'
-	sed -i.bak -e 's|/Users/mringwal/buildbot-worker/test-develop/build|btstack|' coverage-sm-sc.info
-	# generate html output
-	genhtml coverage-sm-sc.info --branch-coverage --output-directory coverage-sm-sc
+	python3 ./sm_test.py