diff --git a/lfsapi/schema/reader.go b/lfsapi/schema/reader.go
index 0a78d7e6..db2645a3 100644
--- a/lfsapi/schema/reader.go
+++ b/lfsapi/schema/reader.go
@@ -11,9 +11,9 @@ import (
 )
 
 var (
-	// ErrValidationIncomplete is an error returned when `ValidationErr()`
+	// errValidationIncomplete is an error returned when `ValidationErr()`
 	// is called while the reader is still processing data.
-	ErrValidationIncomplete = errors.New("lfsapi/schema: validation incomplete")
+	errValidationIncomplete = errors.New("lfsapi/schema: validation incomplete")
 )
 
 // state represents the set of valid states a `*Reader` (see below) can be in
@@ -86,7 +86,7 @@ func (r *Reader) ValidationErr() error {
 	} else {
 		switch state(atomic.LoadUint32(&r.state)) {
 		case stateNotStarted, stateProcessing:
-			return ErrValidationIncomplete
+			return errValidationIncomplete
 		}
 	}
 
diff --git a/lfsapi/schema/reader_test.go b/lfsapi/schema/reader_test.go
index 0d9a5ac5..c06c5842 100644
--- a/lfsapi/schema/reader_test.go
+++ b/lfsapi/schema/reader_test.go
@@ -36,7 +36,7 @@ func TestSchemaReaderBeforeValidation(t *testing.T) {
 
 	r := schema.Reader(strings.NewReader("1"))
 
-	assert.Equal(t, ErrValidationIncomplete, r.ValidationErr())
+	assert.Equal(t, errValidationIncomplete, r.ValidationErr())
 }
 
 func TestSchemaReaderDuringValidation(t *testing.T) {
@@ -51,5 +51,5 @@ func TestSchemaReaderDuringValidation(t *testing.T) {
 	assert.Equal(t, 1, n)
 	assert.Nil(t, err)
 
-	assert.Equal(t, ErrValidationIncomplete, r.ValidationErr())
+	assert.Equal(t, errValidationIncomplete, r.ValidationErr())
 }