diff --git a/config/config.go b/config/config.go
index 9466a2d7cc..ee088fe99b 100644
--- a/config/config.go
+++ b/config/config.go
@@ -728,7 +728,7 @@ func (tg *TargetGroup) UnmarshalYAML(unmarshal func(interface{}) error) error {
 		})
 	}
 	tg.Labels = g.Labels
-	return checkOverflow(g.XXX, "target_group")
+	return checkOverflow(g.XXX, "static_config")
 }
 
 // MarshalYAML implements the yaml.Marshaler interface.
diff --git a/discovery/file/file_test.go b/discovery/file/file_test.go
index 39ce91f476..fb10fa9dd7 100644
--- a/discovery/file/file_test.go
+++ b/discovery/file/file_test.go
@@ -60,7 +60,7 @@ func testFileSD(t *testing.T, ext string) {
 	}
 	defer newf.Close()
 
-	f, err := os.Open("fixtures/target_groups" + ext)
+	f, err := os.Open("fixtures/valid" + ext)
 	if err != nil {
 		t.Fatal(err)
 	}
diff --git a/discovery/file/fixtures/target_groups.json b/discovery/file/fixtures/valid.json
similarity index 100%
rename from discovery/file/fixtures/target_groups.json
rename to discovery/file/fixtures/valid.json
diff --git a/discovery/file/fixtures/target_groups.yml b/discovery/file/fixtures/valid.yml
similarity index 100%
rename from discovery/file/fixtures/target_groups.yml
rename to discovery/file/fixtures/valid.yml