diff --git a/core/src/main/java/hudson/model/User.java b/core/src/main/java/hudson/model/User.java
index 1cf1ffdf8b1a447c9e2b270585b5c9f39642d15b..159e25abc1c6688b58e4a62de64c0fe33984135d 100644
--- a/core/src/main/java/hudson/model/User.java
+++ b/core/src/main/java/hudson/model/User.java
@@ -447,7 +447,7 @@ public class User extends AbstractModelObject implements AccessControlled, Descr
                                     new Object[]{ legacyUserDir, o });
                         }
                     } catch (IOException e) {
-                        LOGGER.log(Level.FINE, String.format("Exception trying to load user from {0}: {1}",
+                        LOGGER.log(Level.FINE, String.format("Exception trying to load user from %s: %s",
                                 new Object[]{ legacyUserDir, e.getMessage() }), e);
                     }
                 }