--- a/src/java.base/share/classes/java/security/KeyStore.java	Mon Nov 26 15:06:53 2018 -0800
+++ b/src/java.base/share/classes/java/security/KeyStore.java	Tue Nov 27 08:51:20 2018 +0800
@@ -1813,8 +1813,8 @@
             }
         }
 
-        throw new KeyStoreException("Unrecognized keystore format: " +
-            keystore);
+        throw new KeyStoreException("This keystore does not support probing "
+                + "and must be loaded with a specified type");
     }
 
     /**