diff --git a/migrate.go b/migrate.go
index db53aaf..8a6c7f0 100644
--- a/migrate.go
+++ b/migrate.go
@@ -66,13 +66,13 @@ type Migrate struct {
 func New(sourceUrl, databaseUrl string) (*Migrate, error) {
 	m := newCommon()
 
-	sourceName, err := nameFromUrl(sourceUrl)
+	sourceName, err := schemeFromUrl(sourceUrl)
 	if err != nil {
 		return nil, err
 	}
 	m.sourceName = sourceName
 
-	databaseName, err := nameFromUrl(databaseUrl)
+	databaseName, err := schemeFromUrl(databaseUrl)
 	if err != nil {
 		return nil, err
 	}
@@ -100,7 +100,7 @@ func New(sourceUrl, databaseUrl string) (*Migrate, error) {
 func NewWithDatabaseInstance(sourceUrl string, databaseName string, databaseInstance database.Driver) (*Migrate, error) {
 	m := newCommon()
 
-	sourceName, err := nameFromUrl(sourceUrl)
+	sourceName, err := schemeFromUrl(sourceUrl)
 	if err != nil {
 		return nil, err
 	}
@@ -126,7 +126,7 @@ func NewWithDatabaseInstance(sourceUrl string, databaseName string, databaseInst
 func NewWithSourceInstance(sourceName string, sourceInstance source.Driver, databaseUrl string) (*Migrate, error) {
 	m := newCommon()
 
-	databaseName, err := nameFromUrl(databaseUrl)
+	databaseName, err := schemeFromUrl(databaseUrl)
 	if err != nil {
 		return nil, err
 	}
diff --git a/util.go b/util.go
index a92e359..ea5ea8f 100644
--- a/util.go
+++ b/util.go
@@ -46,8 +46,8 @@ func suint(n int) uint {
 	return uint(n)
 }
 
-// newSlowReader turns an io.Reader into a slow io.Reader
-// use to simulate a slow internet connection
+// newSlowReader turns an io.ReadCloser into a slow io.ReadCloser.
+// Use this to simulate a slow internet connection.
 func newSlowReader(r io.ReadCloser) io.ReadCloser {
 	return &slowReader{
 		rx:     r,
@@ -75,16 +75,17 @@ func (b *slowReader) Close() error {
 	return b.rx.Close()
 }
 
-var errNoName = fmt.Errorf("no name")
+var errNoScheme = fmt.Errorf("no scheme")
 
-func nameFromUrl(url string) (string, error) {
+// schemeFromUrl returns the scheme from a URL string
+func schemeFromUrl(url string) (string, error) {
 	u, err := nurl.Parse(url)
 	if err != nil {
 		return "", err
 	}
 
 	if len(u.Scheme) == 0 {
-		return "", errNoName
+		return "", errNoScheme
 	}
 
 	return u.Scheme, nil