diff --git a/core/src/main/java/hudson/util/spring/BeanBuilder.java b/core/src/main/java/hudson/util/spring/BeanBuilder.java
index f5619fe421..210e05fb29 100644
--- a/core/src/main/java/hudson/util/spring/BeanBuilder.java
+++ b/core/src/main/java/hudson/util/spring/BeanBuilder.java
@@ -40,7 +40,6 @@ import org.springframework.web.context.WebApplicationContext;
 import java.io.IOException;
 import java.io.InputStream;
 import java.util.Arrays;
-import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
 import java.util.ListIterator;