diff --git a/core/src/main/java/hudson/model/Label.java b/core/src/main/java/hudson/model/Label.java
index b0c32f212a09..94d8b9683ed7 100644
--- a/core/src/main/java/hudson/model/Label.java
+++ b/core/src/main/java/hudson/model/Label.java
@@ -454,7 +454,7 @@ public Api getApi() {
     public abstract <V, P> V accept(LabelVisitor<V, P> visitor, P param);
 
     /**
-     * Lists up all the atoms contained in in this label.
+     * Lists all the atoms contained in this label.
      *
      * @since 1.420
      */
diff --git a/core/src/main/java/hudson/util/StackedAreaRenderer2.java b/core/src/main/java/hudson/util/StackedAreaRenderer2.java
index 3d165b27cce9..19fefcd65d9b 100644
--- a/core/src/main/java/hudson/util/StackedAreaRenderer2.java
+++ b/core/src/main/java/hudson/util/StackedAreaRenderer2.java
@@ -109,7 +109,7 @@ public void drawItem(Graphics2D g2,
 
         double value = dataValue.doubleValue();
 
-        // leave the y values (y1, y0) untranslated as it is going to be be
+        // leave the y values (y1, y0) untranslated as it is going to be
         // stacked up later by previous series values, after this it will be
         // translated.
         double xx1 = domainAxis.getCategoryMiddle(column, getColumnCount(),
diff --git a/test/src/test/java/hudson/model/UserTest.java b/test/src/test/java/hudson/model/UserTest.java
index 316c5fe89e65..4f5d6e8f4365 100644
--- a/test/src/test/java/hudson/model/UserTest.java
+++ b/test/src/test/java/hudson/model/UserTest.java
@@ -256,7 +256,7 @@ public void testAddAndGetProperty() throws Exception {
         user.addProperty(prop);
         assertNotNull("User should have SomeUserProperty property.", user.getProperty(SomeUserProperty.class));
         assertEquals("UserProperty1 should be assigned to its descriptor", prop, user.getProperties().get(prop.getDescriptor()));
-        assertTrue("User should should contain SomeUserProperty.", user.getAllProperties().contains(prop));
+        assertTrue("User should contain SomeUserProperty.", user.getAllProperties().contains(prop));
         }
         j.jenkins.reload();
         {