diff --git a/util.go b/util.go
index 671bfbe..fc0aa01 100644
--- a/util.go
+++ b/util.go
@@ -202,7 +202,7 @@ func marshalConfigWriter(f afero.File, c map[string]interface{}, configType stri
 	return nil
 }
 
-func unmarshallConfigReader(in io.Reader, c map[string]interface{}, configType string) error {
+func unmarshalConfigReader(in io.Reader, c map[string]interface{}, configType string) error {
 	buf := new(bytes.Buffer)
 	buf.ReadFrom(in)
 
diff --git a/viper.go b/viper.go
index 3dd4eb2..e0f7fc7 100644
--- a/viper.go
+++ b/viper.go
@@ -1351,14 +1351,14 @@ func (v *Viper) WatchRemoteConfigOnChannel() error {
 	return v.watchKeyValueConfigOnChannel()
 }
 
-// Unmarshall a Reader into a map.
+// Unmarshal a Reader into a map.
 // Should probably be an unexported function.
 func unmarshalReader(in io.Reader, c map[string]interface{}) error {
 	return v.unmarshalReader(in, c)
 }
 
 func (v *Viper) unmarshalReader(in io.Reader, c map[string]interface{}) error {
-	return unmarshallConfigReader(in, c, v.getConfigType())
+	return unmarshalConfigReader(in, c, v.getConfigType())
 }
 
 // Marshal a map into Writer.
diff --git a/viper_test.go b/viper_test.go
index 774ca11..ed53272 100644
--- a/viper_test.go
+++ b/viper_test.go
@@ -262,7 +262,7 @@ func TestDefault(t *testing.T) {
 	assert.Equal(t, "leather", Get("clothing.jacket"))
 }
 
-func TestUnmarshalling(t *testing.T) {
+func TestUnmarshaling(t *testing.T) {
 	SetConfigType("yaml")
 	r := bytes.NewReader(yamlExample)