diff --git a/common/theme.go b/common/theme.go
index 21efe8a5..40fc42b5 100644
--- a/common/theme.go
+++ b/common/theme.go
@@ -17,6 +17,7 @@ import (
 	"path/filepath"
 	"reflect"
 	"strings"
+	"strconv"
 	"text/template"
 
 	"github.com/Azareal/Gosora/common/phrases"
@@ -166,7 +167,7 @@ func (theme *Theme) AddThemeStaticFiles() error {
 		hasher.Write(data)
 		checksum := hex.EncodeToString(hasher.Sum(nil))
 
-		StaticFiles.Set("/static/"+theme.Name+path, SFile{data, gzipData, checksum,theme.Name+path + "?h=" + checksum, 0, int64(len(data)), int64(len(gzipData)), mime.TypeByExtension(ext), f, f.ModTime().UTC().Format(http.TimeFormat)})
+		StaticFiles.Set("/static/"+theme.Name+path, SFile{data, gzipData, checksum,theme.Name+path + "?h=" + checksum, 0, int64(len(data)), int64(len(gzipData)),strconv.Itoa(len(gzipData)), mime.TypeByExtension(ext), f, f.ModTime().UTC().Format(http.TimeFormat)})
 
 		DebugLog("Added the '/" + theme.Name + path + "' static file for theme " + theme.Name + ".")
 		return nil