diff --git a/lib/util/logger.js b/lib/util/logger.js
index aad83ff7..2fe9949e 100644
--- a/lib/util/logger.js
+++ b/lib/util/logger.js
@@ -39,21 +39,22 @@ Log.prototype.fatal = function() {
 
 Log.prototype._format = function(priority, args) {
   return util.format('%s %s/%s %d %s\n',
-    Log.prefix, priority, this.tag, process.pid, util.format.apply(util, args))
+    Log.globalPrefix, priority, this.tag, process.pid,
+    util.format.apply(util, args))
 }
 
 Log.prototype._write = function(out) {
   this.stream.write(out)
 }
 
-Log.prefix = '*'
+Log.globalPrefix = '*'
 
 Log.createLogger = function(tag) {
   return new Log(tag)
 }
 
-Log.setPrefix = function(prefix) {
-  Log.prefix = prefix
+Log.setGlobalPrefix = function(prefix) {
+  Log.globalPrefix = prefix
 }
 
 exports = module.exports = Log
diff --git a/test/util/logger.js b/test/util/logger.js
index 4afca5d3..47a7bd59 100644
--- a/test/util/logger.js
+++ b/test/util/logger.js
@@ -9,4 +9,8 @@ describe('Logger', function() {
     expect(logger).itself.to.respondTo('createLogger')
   })
 
+  it('should have a setGlobalPrefix method', function() {
+    expect(logger).itself.to.respondTo('setGlobalPrefix')
+  })
+
 })