diff --git a/config/log_test.go b/config/log_test.go
index f8caedff771..444f39798b7 100644
--- a/config/log_test.go
+++ b/config/log_test.go
@@ -70,7 +70,7 @@ func TestLogProcessor(t *testing.T) {
 	}{
 		{
 			name:    "no processor",
-			wantErr: errors.New("unsupported log processor type {<nil> <nil>}"),
+			wantErr: errors.New("unsupported log processor type {<nil> <nil> <nil>}"),
 		},
 		{
 			name: "multiple processor types",