diff --git a/src/main/java/org/kohsuke/github/GHCommitSearchBuilder.java b/src/main/java/org/kohsuke/github/GHCommitSearchBuilder.java
index 1385b0c67e..65136dc0a4 100644
--- a/src/main/java/org/kohsuke/github/GHCommitSearchBuilder.java
+++ b/src/main/java/org/kohsuke/github/GHCommitSearchBuilder.java
@@ -1,7 +1,6 @@
 package org.kohsuke.github;
 
 import java.io.IOException;
-import java.util.Locale;
 
 import org.apache.commons.lang.StringUtils;
 
@@ -15,7 +14,7 @@
 public class GHCommitSearchBuilder extends GHSearchBuilder<GHCommit> {
     /*package*/ GHCommitSearchBuilder(GitHub root) {
         super(root,CommitSearchResult.class);
-        req = req.withPreview(Previews.CLOAK);
+        req.withPreview(Previews.CLOAK);
     }
 
     /**
diff --git a/src/main/java/org/kohsuke/github/GHQueryBuilder.java b/src/main/java/org/kohsuke/github/GHQueryBuilder.java
index 5eca4278a1..bb85fbbe95 100644
--- a/src/main/java/org/kohsuke/github/GHQueryBuilder.java
+++ b/src/main/java/org/kohsuke/github/GHQueryBuilder.java
@@ -7,7 +7,7 @@
  */
 public abstract class GHQueryBuilder<T> {
     protected final GitHub root;
-    protected Requester req;
+    protected final Requester req;
 
     /*package*/ GHQueryBuilder(GitHub root) {
         this.root = root;