diff --git a/Makefile b/Makefile
index f50b0ae..a384f57 100644
--- a/Makefile
+++ b/Makefile
@@ -6,6 +6,7 @@ export RADICALE_BACKEND := filesystem
 export REQUIREMENTS := release
 export TESTSERVER_BASE := ./tests/storage/servers/
 export CI := false
+export COVERAGE := $(CI)
 export DETERMINISTIC_TESTS := false
 
 all:
@@ -32,7 +33,7 @@ install-test: install-servers
 
 test:
 	set -e; \
-	if [ "$(CI)" = "true" ]; then \
+	if [ "$(COVERAGE)" = "true" ]; then \
 		py.test --cov-config .coveragerc; \
 	else \
 		py.test; \
diff --git a/tests/unit/utils/test_vobject.py b/tests/unit/utils/test_vobject.py
index 236cb55..587bb3d 100644
--- a/tests/unit/utils/test_vobject.py
+++ b/tests/unit/utils/test_vobject.py
@@ -308,7 +308,7 @@ class VobjectMachine(RuleBasedStateMachine):
           params=st.lists(st.tuples(value_strategy, value_strategy)))
     def add_prop_raw(self, c, key, value, params):
         params_str = ','.join(k + '=' + v for k, v in params)
-        c.props.append('{};{}:{}'.format(key, params_str, value))
+        c.props.insert(0, '{};{}:{}'.format(key, params_str, value))
         assert c[key] == value
         assert key in c
         assert c.get(key) == value