diff --git a/tests/jsonunittests.cfg b/tests/jsonunittests.cfg
index cbac5e3..22575c1 100644
--- a/tests/jsonunittests.cfg
+++ b/tests/jsonunittests.cfg
@@ -58,6 +58,7 @@ include keys.cfg
 </test>
 
 <test vjc>
+  prepare = rm -f vjc
   <test check-json-import-secret>
     cmd = $pcp -V vjc -K -I testkeyvjasec.json -x a -j
     expect = /added/