diff --git a/core/src/test/java/info/nightscout/androidaps/TestBaseWithProfile.kt b/core/src/test/java/info/nightscout/androidaps/TestBaseWithProfile.kt
index 8d6807485d..5b9d401678 100644
--- a/core/src/test/java/info/nightscout/androidaps/TestBaseWithProfile.kt
+++ b/core/src/test/java/info/nightscout/androidaps/TestBaseWithProfile.kt
@@ -90,12 +90,13 @@ open class TestBaseWithProfile : TestBase() {
         json.put("store", store)
         return ProfileStore(profileInjector, json, dateUtil)
     }
+
     fun getInvalidProfileStore2(): ProfileStore {
         val json = JSONObject()
         val store = JSONObject()
         store.put(TESTPROFILENAME, JSONObject(validProfileJSON))
         store.put("invalid", JSONObject(invalidProfileJSON))
-        json.put("defaultProfile", TESTPROFILENAME)
+        json.put("defaultProfile", TESTPROFILENAME + "invalid")
         json.put("store", store)
         return ProfileStore(profileInjector, json, dateUtil)
     }
diff --git a/core/src/test/java/info/nightscout/androidaps/interfaces/ProfileStoreTest.kt b/core/src/test/java/info/nightscout/androidaps/interfaces/ProfileStoreTest.kt
index cd5f464d24..3c9b826862 100644
--- a/core/src/test/java/info/nightscout/androidaps/interfaces/ProfileStoreTest.kt
+++ b/core/src/test/java/info/nightscout/androidaps/interfaces/ProfileStoreTest.kt
@@ -2,6 +2,7 @@ package info.nightscout.androidaps.interfaces
 
 import info.nightscout.androidaps.TestBaseWithProfile
 import info.nightscout.androidaps.data.PureProfile
+import org.json.JSONObject
 import org.junit.Assert
 import org.junit.Test
 
@@ -20,6 +21,7 @@ internal class ProfileStoreTest : TestBaseWithProfile() {
     @Test
     fun getDefaultProfileJsonTest() {
         Assert.assertTrue(getValidProfileStore().getDefaultProfileJson()?.has("dia") ?: false)
+        Assert.assertEquals(null, getInvalidProfileStore2().getDefaultProfileJson())
     }
 
     @Test