diff --git a/cmd/web.go b/cmd/web.go
index df9a380c11..38b802b682 100644
--- a/cmd/web.go
+++ b/cmd/web.go
@@ -55,6 +55,12 @@ and it takes care of all the other things for you`,
 	Flags:  []cli.Flag{},
 }
 
+type VerChecker struct {
+	ImportPath string
+	Version    func() string
+	Expected   string
+}
+
 // checkVersion checks if binary matches the version of templates files.
 func checkVersion() {
 	// Templates.
@@ -67,17 +73,17 @@ func checkVersion() {
 	}
 
 	// Check dependency version.
-	macaronVer := git.MustParseVersion(strings.Join(strings.Split(macaron.Version(), ".")[:3], "."))
-	if macaronVer.LessThan(git.MustParseVersion("0.4.7")) {
-		log.Fatal(4, "Package macaron version is too old, did you forget to update?(github.com/Unknwon/macaron)")
+	checkers := []VerChecker{
+		{"github.com/Unknwon/macaron", macaron.Version, "0.4.7"},
+		{"github.com/macaron-contrib/binding", binding.Version, "0.0.2"},
+		{"github.com/macaron-contrib/i18n", i18n.Version, "0.0.3"},
+		{"github.com/macaron-contrib/session", session.Version, "0.0.5"},
 	}
-	i18nVer := git.MustParseVersion(i18n.Version())
-	if i18nVer.LessThan(git.MustParseVersion("0.0.2")) {
-		log.Fatal(4, "Package i18n version is too old, did you forget to update?(github.com/macaron-contrib/i18n)")
-	}
-	sessionVer := git.MustParseVersion(session.Version())
-	if sessionVer.LessThan(git.MustParseVersion("0.0.5")) {
-		log.Fatal(4, "Package session version is too old, did you forget to update?(github.com/macaron-contrib/session)")
+	for _, c := range checkers {
+		ver := strings.Join(strings.Split(c.Version(), ".")[:3], ".")
+		if git.MustParseVersion(ver).LessThan(git.MustParseVersion(c.Expected)) {
+			log.Fatal(4, "Package '%s' version is too old(%s -> %s), did you forget to update?", c.ImportPath, ver, c.Expected)
+		}
 	}
 }
 
diff --git a/gogs.go b/gogs.go
index af8e007d07..c117d4ff60 100644
--- a/gogs.go
+++ b/gogs.go
@@ -17,7 +17,7 @@ import (
 	"github.com/gogits/gogs/modules/setting"
 )
 
-const APP_VER = "0.5.9.1213 Beta"
+const APP_VER = "0.5.9.1215 Beta"
 
 func init() {
 	runtime.GOMAXPROCS(runtime.NumCPU())
diff --git a/modules/auth/apiv1/miscellaneous.go b/modules/auth/apiv1/miscellaneous.go
index d470ff0e45..4e7570051e 100644
--- a/modules/auth/apiv1/miscellaneous.go
+++ b/modules/auth/apiv1/miscellaneous.go
@@ -49,19 +49,19 @@ func validateApiReq(errs binding.Errors, data map[string]interface{}, f auth.For
 
 		if errs[0].FieldNames[0] == field.Name {
 			switch errs[0].Classification {
-			case binding.RequiredError:
+			case binding.ERR_REQUIRED:
 				data["ErrorMsg"] = fieldName + " cannot be empty"
-			case binding.AlphaDashError:
+			case binding.ERR_ALPHA_DASH:
 				data["ErrorMsg"] = fieldName + " must be valid alpha or numeric or dash(-_) characters"
-			case binding.AlphaDashDotError:
+			case binding.ERR_ALPHA_DASH_DOT:
 				data["ErrorMsg"] = fieldName + " must be valid alpha or numeric or dash(-_) or dot characters"
-			case binding.MinSizeError:
+			case binding.ERR_MIN_SIZE:
 				data["ErrorMsg"] = fieldName + " must contain at least " + auth.GetMinSize(field) + " characters"
-			case binding.MaxSizeError:
+			case binding.ERR_MAX_SIZE:
 				data["ErrorMsg"] = fieldName + " must contain at most " + auth.GetMaxSize(field) + " characters"
-			case binding.EmailError:
+			case binding.ERR_EMAIL:
 				data["ErrorMsg"] = fieldName + " is not a valid e-mail address"
-			case binding.UrlError:
+			case binding.ERR_URL:
 				data["ErrorMsg"] = fieldName + " is not a valid URL"
 			default:
 				data["ErrorMsg"] = "Unknown error: " + errs[0].Classification
diff --git a/modules/auth/auth.go b/modules/auth/auth.go
index acf4bf02ef..1dd96d8d40 100644
--- a/modules/auth/auth.go
+++ b/modules/auth/auth.go
@@ -204,19 +204,19 @@ func validate(errs binding.Errors, data map[string]interface{}, f Form, l macaro
 			data["Err_"+field.Name] = true
 			trName := l.Tr("form." + field.Name)
 			switch errs[0].Classification {
-			case binding.RequiredError:
+			case binding.ERR_REQUIRED:
 				data["ErrorMsg"] = trName + l.Tr("form.require_error")
-			case binding.AlphaDashError:
+			case binding.ERR_ALPHA_DASH:
 				data["ErrorMsg"] = trName + l.Tr("form.alpha_dash_error")
-			case binding.AlphaDashDotError:
+			case binding.ERR_ALPHA_DASH_DOT:
 				data["ErrorMsg"] = trName + l.Tr("form.alpha_dash_dot_error")
-			case binding.MinSizeError:
+			case binding.ERR_MIN_SIZE:
 				data["ErrorMsg"] = trName + l.Tr("form.min_size_error", GetMinSize(field))
-			case binding.MaxSizeError:
+			case binding.ERR_MAX_SIZE:
 				data["ErrorMsg"] = trName + l.Tr("form.max_size_error", GetMaxSize(field))
-			case binding.EmailError:
+			case binding.ERR_EMAIL:
 				data["ErrorMsg"] = trName + l.Tr("form.email_error")
-			case binding.UrlError:
+			case binding.ERR_URL:
 				data["ErrorMsg"] = trName + l.Tr("form.url_error")
 			default:
 				data["ErrorMsg"] = l.Tr("form.unknown_error") + " " + errs[0].Classification
diff --git a/templates/.VERSION b/templates/.VERSION
index 05142fea35..4e6350ff43 100644
--- a/templates/.VERSION
+++ b/templates/.VERSION
@@ -1 +1 @@
-0.5.9.1213 Beta
\ No newline at end of file
+0.5.9.1215 Beta
\ No newline at end of file