diff --git a/models/ssh_key.go b/models/ssh_key.go
index 2f23026997..3bd2a739df 100644
--- a/models/ssh_key.go
+++ b/models/ssh_key.go
@@ -219,7 +219,7 @@ func SSHKeyGenParsePublicKey(key string) (string, int, error) {
 func SSHNativeParsePublicKey(keyLine string) (string, int, error) {
 	fields := strings.Fields(keyLine)
 	if len(fields) < 2 {
-		return "", 0, fmt.Errorf("not enough fields in public key line: %s", string(keyLine))
+		return "", 0, fmt.Errorf("not enough fields in public key line: %s", keyLine)
 	}
 
 	raw, err := base64.StdEncoding.DecodeString(fields[1])
diff --git a/modules/lfs/server.go b/modules/lfs/server.go
index f82cb70364..1bdeadc463 100644
--- a/modules/lfs/server.go
+++ b/modules/lfs/server.go
@@ -132,7 +132,7 @@ func GetContentHandler(ctx *context.Context) {
 		if match != nil && len(match) > 1 {
 			statusCode = 206
 			fromByte, _ = strconv.ParseInt(match[1], 10, 32)
-			ctx.Resp.Header().Set("Content-Range", fmt.Sprintf("bytes %d-%d/%d", fromByte, meta.Size-1, int64(meta.Size)-fromByte))
+			ctx.Resp.Header().Set("Content-Range", fmt.Sprintf("bytes %d-%d/%d", fromByte, meta.Size-1, meta.Size-fromByte))
 		}
 	}
 
diff --git a/modules/markdown/markdown.go b/modules/markdown/markdown.go
index b973b7c836..c0b7c91f83 100644
--- a/modules/markdown/markdown.go
+++ b/modules/markdown/markdown.go
@@ -301,7 +301,7 @@ func RenderSha1CurrentPattern(rawBytes []byte, urlPrefix string) []byte {
 		if com.StrTo(m).MustInt() > 0 {
 			return m
 		}
-		return fmt.Sprintf(`<a href="%s/commit/%s"><code>%s</code></a>`, urlPrefix, m, base.ShortSha(string(m)))
+		return fmt.Sprintf(`<a href="%s/commit/%s"><code>%s</code></a>`, urlPrefix, m, base.ShortSha(m))
 	}))
 }
 
diff --git a/modules/templates/helper.go b/modules/templates/helper.go
index f65b8c6856..0c56ae0e0a 100644
--- a/modules/templates/helper.go
+++ b/modules/templates/helper.go
@@ -121,8 +121,8 @@ func NewFuncMap() []template.FuncMap {
 			var path []string
 			index := strings.LastIndex(str, "/")
 			if index != -1 && index != len(str) {
-				path = append(path, string(str[0:index+1]))
-				path = append(path, string(str[index+1:]))
+				path = append(path, str[0:index+1])
+				path = append(path, str[index+1:])
 			} else {
 				path = append(path, str)
 			}