diff --git a/test/configuration-test.js b/test/configuration-test.js
index 5433466..b1ce9e1 100644
--- a/test/configuration-test.js
+++ b/test/configuration-test.js
@@ -120,7 +120,7 @@ vows.describe('log4js configure').addBatch({
                                          'fs': fakeFS,
                                        }
                                      });
-
+            delete process.env.LOG4JS_CONFIG;
             return fileRead;
           },
           'should load the specified local configuration file' : function(fileRead) {