diff --git a/src/parser-browsers.js b/src/parser-browsers.js
index fba7884..74b2bad 100644
--- a/src/parser-browsers.js
+++ b/src/parser-browsers.js
@@ -559,7 +559,7 @@ const browsersList = [
       const browser = {
         name: 'PlayStation 4',
       };
-      const version = getFirstMatch(commonVersionIdentifier, ua);
+      const version = Utils.getFirstMatch(commonVersionIdentifier, ua);
 
       if (version) {
         browser.version = version;
diff --git a/src/parser-os.js b/src/parser-os.js
index 9896b6a..f3f51d2 100644
--- a/src/parser-os.js
+++ b/src/parser-os.js
@@ -155,7 +155,7 @@ export default [
   {
     test: [/PlayStation 4/],
     describe(ua) {
-      const version = getFirstMatch(/PlayStation 4[/\s](\d+(\.\d+)*)/i, ua);
+      const version = Utils.getFirstMatch(/PlayStation 4[/\s](\d+(\.\d+)*)/i, ua);
       return {
         name: 'PlayStation 4',
         version,