diff --git a/configuration/configuration.go b/configuration/configuration.go
index bbb88a0e..8e68190d 100644
--- a/configuration/configuration.go
+++ b/configuration/configuration.go
@@ -103,7 +103,7 @@ func (storage Storage) Parameters() Parameters {
 }
 
 // setParameter changes the parameter at the provided key to the new value
-func (storage Storage) setParameter(key, value string) {
+func (storage Storage) setParameter(key string, value interface{}) {
 	storage[storage.Type()][key] = value
 }
 
@@ -143,7 +143,7 @@ func (storage Storage) MarshalYAML() (interface{}, error) {
 }
 
 // Parameters defines a key-value parameters mapping
-type Parameters map[string]string
+type Parameters map[string]interface{}
 
 // Reporting defines error reporting methods.
 type Reporting struct {
diff --git a/configuration/configuration_test.go b/configuration/configuration_test.go
index 75bec818..e6fd6295 100644
--- a/configuration/configuration_test.go
+++ b/configuration/configuration_test.go
@@ -21,12 +21,12 @@ var configStruct = Configuration{
 			"region":    "us-east-1",
 			"bucket":    "my-bucket",
 			"rootpath":  "/registry",
-			"encrypt":   "true",
-			"secure":    "false",
+			"encrypt":   true,
+			"secure":    false,
 			"accesskey": "SAMPLEACCESSKEY",
 			"secretkey": "SUPERSECRET",
-			"host":      "",
-			"port":      "",
+			"host":      nil,
+			"port":      42,
 		},
 	},
 	Reporting: Reporting{
@@ -50,7 +50,7 @@ storage:
     accesskey: SAMPLEACCESSKEY
     secretkey: SUPERSECRET
     host: ~
-    port: ~
+    port: 42
 reporting:
   bugsnag:
     apikey: BugsnagApiKey
@@ -142,7 +142,7 @@ func (suite *ConfigSuite) TestParseWithSameEnvStorage(c *C) {
 // Configuration struct
 func (suite *ConfigSuite) TestParseWithDifferentEnvStorageParams(c *C) {
 	suite.expectedConfig.Storage.setParameter("region", "us-west-1")
-	suite.expectedConfig.Storage.setParameter("secure", "true")
+	suite.expectedConfig.Storage.setParameter("secure", true)
 	suite.expectedConfig.Storage.setParameter("newparam", "some Value")
 
 	os.Setenv("REGISTRY_STORAGE_S3_REGION", "us-west-1")
diff --git a/storagedriver/factory/factory.go b/storagedriver/factory/factory.go
index 0f8ca001..254cd9bb 100644
--- a/storagedriver/factory/factory.go
+++ b/storagedriver/factory/factory.go
@@ -16,7 +16,7 @@ type StorageDriverFactory interface {
 	// Create returns a new storagedriver.StorageDriver with the given parameters
 	// Parameters will vary by driver and may be ignored
 	// Each parameter key must only consist of lowercase letters and numbers
-	Create(parameters map[string]string) (storagedriver.StorageDriver, error)
+	Create(parameters map[string]interface{}) (storagedriver.StorageDriver, error)
 }
 
 // Register makes a storage driver available by the provided name.
@@ -37,7 +37,7 @@ func Register(name string, factory StorageDriverFactory) {
 // To run in-process, the StorageDriverFactory must first be registered with the given name
 // If no in-process drivers are found with the given name, this attempts to create an IPC driver
 // If no in-process or external drivers are found, an InvalidStorageDriverError is returned
-func Create(name string, parameters map[string]string) (storagedriver.StorageDriver, error) {
+func Create(name string, parameters map[string]interface{}) (storagedriver.StorageDriver, error) {
 	driverFactory, ok := driverFactories[name]
 	if !ok {
 		return nil, InvalidStorageDriverError{name}
diff --git a/storagedriver/filesystem/driver.go b/storagedriver/filesystem/driver.go
index 3c3c950f..635c13a2 100644
--- a/storagedriver/filesystem/driver.go
+++ b/storagedriver/filesystem/driver.go
@@ -23,7 +23,7 @@ func init() {
 // filesystemDriverFactory implements the factory.StorageDriverFactory interface
 type filesystemDriverFactory struct{}
 
-func (factory *filesystemDriverFactory) Create(parameters map[string]string) (storagedriver.StorageDriver, error) {
+func (factory *filesystemDriverFactory) Create(parameters map[string]interface{}) (storagedriver.StorageDriver, error) {
 	return FromParameters(parameters), nil
 }
 
@@ -36,12 +36,12 @@ type Driver struct {
 // FromParameters constructs a new Driver with a given parameters map
 // Optional Parameters:
 // - rootdirectory
-func FromParameters(parameters map[string]string) *Driver {
+func FromParameters(parameters map[string]interface{}) *Driver {
 	var rootDirectory = defaultRootDirectory
 	if parameters != nil {
 		rootDir, ok := parameters["rootdirectory"]
 		if ok {
-			rootDirectory = rootDir
+			rootDirectory = fmt.Sprint(rootDir)
 		}
 	}
 	return New(rootDirectory)
diff --git a/storagedriver/inmemory/driver.go b/storagedriver/inmemory/driver.go
index 7481c472..2e23c758 100644
--- a/storagedriver/inmemory/driver.go
+++ b/storagedriver/inmemory/driver.go
@@ -21,7 +21,7 @@ func init() {
 // inMemoryDriverFacotry implements the factory.StorageDriverFactory interface.
 type inMemoryDriverFactory struct{}
 
-func (factory *inMemoryDriverFactory) Create(parameters map[string]string) (storagedriver.StorageDriver, error) {
+func (factory *inMemoryDriverFactory) Create(parameters map[string]interface{}) (storagedriver.StorageDriver, error) {
 	return New(), nil
 }