diff --git a/command/server/config.go b/command/server/config.go
index b4eb5b2ed1..4568849e30 100644
--- a/command/server/config.go
+++ b/command/server/config.go
@@ -155,7 +155,7 @@ func (b *Storage) GoString() string {
 // ServiceRegistration is the optional service discovery for the server.
 type ServiceRegistration struct {
 	Type   string
-	Config map[string]string
+	Config map[string]interface{}
 }
 
 func (b *ServiceRegistration) GoString() string {
@@ -864,7 +864,7 @@ func parseServiceRegistration(result *Config, list *ast.ObjectList, name string)
 		key = item.Keys[0].Token.Value().(string)
 	}
 
-	var m map[string]string
+	var m map[string]interface{}
 	if err := hcl.DecodeObject(&m, item.Val); err != nil {
 		return multierror.Prefix(err, fmt.Sprintf("%s.%s:", name, key))
 	}
diff --git a/command/server/config_test_helpers.go b/command/server/config_test_helpers.go
index b639a7e01b..e9cba47846 100644
--- a/command/server/config_test_helpers.go
+++ b/command/server/config_test_helpers.go
@@ -49,7 +49,7 @@ func testLoadConfigFile_topLevel(t *testing.T, entropy *Entropy) {
 
 		ServiceRegistration: &ServiceRegistration{
 			Type: "consul",
-			Config: map[string]string{
+			Config: map[string]interface{}{
 				"foo": "bar",
 			},
 		},
@@ -135,7 +135,7 @@ func testLoadConfigFile_json2(t *testing.T, entropy *Entropy) {
 
 		ServiceRegistration: &ServiceRegistration{
 			Type: "consul",
-			Config: map[string]string{
+			Config: map[string]interface{}{
 				"foo": "bar",
 			},
 		},
@@ -277,7 +277,7 @@ func testLoadConfigFile(t *testing.T) {
 
 		ServiceRegistration: &ServiceRegistration{
 			Type: "consul",
-			Config: map[string]string{
+			Config: map[string]interface{}{
 				"foo": "bar",
 			},
 		},
@@ -347,7 +347,7 @@ func testLoadConfigFile_json(t *testing.T) {
 
 		ServiceRegistration: &ServiceRegistration{
 			Type: "consul",
-			Config: map[string]string{
+			Config: map[string]interface{}{
 				"foo": "bar",
 			},
 		},