diff --git a/engine/destinations_test.go b/engine/destinations_test.go
index 740183157..5ea8bbd4f 100644
--- a/engine/destinations_test.go
+++ b/engine/destinations_test.go
@@ -126,6 +126,28 @@ func TestDestinationNonCachedDestWrongPrefix(t *testing.T) {
 	}
 }
 
+func TestDestinationcontainsPrefixNilDestination(t *testing.T) {
+	var d *Destination
+	rcv := d.containsPrefix("prefix")
+	if rcv != 0 {
+		t.Errorf("\nexpected: <%+v>, \nreceived: <%+v>", 0, rcv)
+	}
+}
+
+func TestDestinationString(t *testing.T) {
+	d := &Destination{
+		Id:       "ID",
+		Prefixes: []string{"prefix1", "prefix2", "prefix3"},
+	}
+
+	exp := "ID: prefix1, prefix2, prefix3"
+	rcv := d.String()
+
+	if rcv != exp {
+		t.Errorf("\nexpected: <%+v>, \nreceived: <%+v>", exp, rcv)
+	}
+}
+
 /********************************* Benchmarks **********************************/
 
 func BenchmarkDestinationStorageStoreRestore(b *testing.B) {
diff --git a/engine/version_test.go b/engine/version_test.go
index e16d93e06..b315a5bc3 100644
--- a/engine/version_test.go
+++ b/engine/version_test.go
@@ -302,10 +302,15 @@ func TestVersionCheckVersionsCompareNonNilMsg(t *testing.T) {
 		testcase: "Compare returns non-nil message",
 	}
 
-	experr := fmt.Sprintf("Migration needed: please backup cgr data and run : <%s>", "cgr-migrator -exec=*cost_details")
+	experr1 := fmt.Sprintf("Migration needed: please backup cgr data and run : <%s>", "cgr-migrator -exec=*cost_details")
+	experr2 := fmt.Sprintf("Migration needed: please backup cgr data and run : <%s>", "cgr-migrator -exec=*sessions_costs")
 	err := CheckVersions(storage)
 
-	if err == nil || err.Error() != experr {
-		t.Errorf("\nexpected: <%+v>, \nreceived: <%+v>", experr, err)
+	if err == nil || (err.Error() != experr1 && err.Error() != experr2) {
+		if err.Error() == experr1 {
+			t.Errorf("\nexpected: <%+v>, \nreceived: <%+v>", experr1, err)
+		} else {
+			t.Errorf("\nexpected: <%+v>, \nreceived: <%+v>", experr2, err)
+		}
 	}
 }