diff -r 40a7e2fc9beb src/java.base/share/classes/sun/security/provider/PolicyFile.java
--- a/src/java.base/share/classes/sun/security/provider/PolicyFile.java	Tue Apr 02 11:37:11 2019 +0200
+++ b/src/java.base/share/classes/sun/security/provider/PolicyFile.java	Fri May 17 09:35:42 2019 -0400
@@ -254,7 +254,6 @@
 
     private boolean expandProperties = true;
     private boolean allowSystemProperties = true;
-    private boolean notUtf8 = false;
     private URL url;
 
     // for use with the reflection API
@@ -308,8 +307,6 @@
                     (Security.getProperty("policy.expandProperties"));
                 allowSystemProperties = "true".equalsIgnoreCase
                     (Security.getProperty("policy.allowSystemProperty"));
-                notUtf8 = "false".equalsIgnoreCase
-                    (System.getProperty("sun.security.policy.utf8"));
                 return System.getProperty("sun.security.policy.numcaches");
             }});
 
@@ -563,13 +560,8 @@
                               throws IOException {
         /*
          * Read in policy using UTF-8 by default.
-         *
-         * Check non-standard system property to see if the default encoding
-         * should be used instead.
          */
-        return (notUtf8)
-            ? new InputStreamReader(is)
-            : new InputStreamReader(is, "UTF-8");
+        return new InputStreamReader(is, "UTF-8");
     }
 
     private void initStaticPolicy(final PolicyInfo newInfo) {