diff --git a/Frameworks/RSWeb/RSWeb/URL+RSWeb.swift b/Frameworks/RSWeb/RSWeb/URL+RSWeb.swift
index 6ddba35eb..d482fc167 100755
--- a/Frameworks/RSWeb/RSWeb/URL+RSWeb.swift
+++ b/Frameworks/RSWeb/RSWeb/URL+RSWeb.swift
@@ -64,6 +64,6 @@ private extension String {
 		}
 		
 		let index = self.index(self.startIndex, offsetBy: prefix.characters.count)
-		return substring(from: index)
+		return String(self[..<index])
 	}
 }