diff --git a/info.go b/info.go
index c458b49..582f0fd 100644
--- a/info.go
+++ b/info.go
@@ -16,6 +16,7 @@ package spec
 
 import (
 	"encoding/json"
+	"strconv"
 	"strings"
 
 	"github.com/go-openapi/jsonpointer"
@@ -40,6 +41,24 @@ func (e Extensions) GetString(key string) (string, bool) {
 	return "", false
 }
 
+// GetInt gets a int value from the extensions
+func (e Extensions) GetInt(key string) (int, bool) {
+	realKey := strings.ToLower(key)
+
+	if v, ok := e.GetString(realKey); ok {
+		if r, err := strconv.Atoi(v); err == nil {
+			return r, true
+		}
+	}
+
+	if v, ok := e[realKey]; ok {
+		if r, rOk := v.(float64); rOk {
+			return int(r), true
+		}
+	}
+	return -1, false
+}
+
 // GetBool gets a string value from the extensions
 func (e Extensions) GetBool(key string) (bool, bool) {
 	if v, ok := e[strings.ToLower(key)]; ok {
diff --git a/properties.go b/properties.go
index 2af1378..91d2435 100644
--- a/properties.go
+++ b/properties.go
@@ -42,8 +42,8 @@ func (items OrderSchemaItems) MarshalJSON() ([]byte, error) {
 func (items OrderSchemaItems) Len() int      { return len(items) }
 func (items OrderSchemaItems) Swap(i, j int) { items[i], items[j] = items[j], items[i] }
 func (items OrderSchemaItems) Less(i, j int) (ret bool) {
-	ii, oki := items[i].Extensions.GetString("x-order")
-	ij, okj := items[j].Extensions.GetString("x-order")
+	ii, oki := items[i].Extensions.GetInt("x-order")
+	ij, okj := items[j].Extensions.GetInt("x-order")
 	if oki {
 		if okj {
 			defer func() {
@@ -56,7 +56,7 @@ func (items OrderSchemaItems) Less(i, j int) (ret bool) {
 					ret = reflect.ValueOf(ii).String() < reflect.ValueOf(ij).String()
 				}
 			}()
-			return reflect.ValueOf(ii).Int() < reflect.ValueOf(ij).Int()
+			return ii < ij
 		}
 		return true
 	} else if okj {