diff --git a/core/src/main/java/hudson/matrix/MatrixRun.java b/core/src/main/java/hudson/matrix/MatrixRun.java
index 7c3fb9dfe506e010602a19190a7c92a6c05737de..08fca765f2225c72103bdc8f9b88cfc58b41936d 100644
--- a/core/src/main/java/hudson/matrix/MatrixRun.java
+++ b/core/src/main/java/hudson/matrix/MatrixRun.java
@@ -8,7 +8,6 @@ import java.util.Map;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Calendar;
-import java.util.Map.Entry;
 
 import org.kohsuke.stapler.StaplerRequest;
 import org.kohsuke.stapler.Stapler;