diff --git a/Source/svg/SVGParserRegexHelper.swift b/Source/svg/SVGParserRegexHelper.swift
index d251b9c3..e1a7c4ef 100644
--- a/Source/svg/SVGParserRegexHelper.swift
+++ b/Source/svg/SVGParserRegexHelper.swift
@@ -5,12 +5,10 @@ class SVGParserRegexHelper {
     fileprivate static let transformAttributePattern = "([a-z]+)\\(((\\-?\\d+\\.?\\d*e?\\-?\\d*\\s*,?\\s*)+)\\)"
     fileprivate static let transformPattern = "\\-?\\d+\\.?\\d*e?\\-?\\d*"
     fileprivate static let textElementPattern = "<text.*?>((?s:.*))<\\/text>"
-    fileprivate static let maskIdenitifierPattern = "url\\(#((?s:.*))\\)"
 
     fileprivate static var transformMatcher: NSRegularExpression?
     fileprivate static var transformAttributeMatcher: NSRegularExpression?
     fileprivate static var textElementMatcher: NSRegularExpression?
-    fileprivate static var maskIdenitifierMatcher: NSRegularExpression?
 
     class func getTransformAttributeMatcher() -> NSRegularExpression? {
         if self.transformAttributeMatcher == nil {
@@ -44,15 +42,4 @@ class SVGParserRegexHelper {
         }
         return self.textElementMatcher
     }
-
-    class func getMaskIdenitifierMatcher() -> NSRegularExpression? {
-        if self.maskIdenitifierMatcher == nil {
-            do {
-                self.maskIdenitifierMatcher = try NSRegularExpression(pattern: maskIdenitifierPattern, options: .caseInsensitive)
-            } catch {
-
-            }
-        }
-        return self.maskIdenitifierMatcher
-    }
 }