diff --git a/.travis.yml b/.travis.yml
index df8439fe6..aef821a52 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,8 +1,8 @@
 language: go
 go:
-  - 1.9.x
   - 1.10.x
   - 1.11.x
+  - 1.12.x
 
 sudo: required
 
diff --git a/schema/loader.go b/schema/loader.go
index c6bde0048..f17176595 100644
--- a/schema/loader.go
+++ b/schema/loader.go
@@ -59,7 +59,7 @@ func (factory *fsLoaderFactory) refContents(ref gojsonreference.JsonReference) (
 		}
 	}
 	if path == "" {
-		return nil, fmt.Errorf("Schema reference %#v unexpectedly not available in fsLoaderFactory with namespaces %#v", path, factory.namespaces)
+		return nil, fmt.Errorf("schema reference %#v unexpectedly not available in fsLoaderFactory with namespaces %#v", path, factory.namespaces)
 	}
 
 	f, err := factory.fs.Open(path)