diff --git a/hadoop-common-project/hadoop-auth/pom.xml b/hadoop-common-project/hadoop-auth/pom.xml
index ccbfca019d6..f59cf846024 100644
--- a/hadoop-common-project/hadoop-auth/pom.xml
+++ b/hadoop-common-project/hadoop-auth/pom.xml
@@ -57,11 +57,6 @@
       <artifactId>jetty-util</artifactId>
       <scope>test</scope>
     </dependency>
-    <dependency>
-      <groupId>org.mortbay.jetty</groupId>
-      <artifactId>jetty-util</artifactId>
-      <scope>test</scope>
-    </dependency>
     <dependency>
       <groupId>org.mortbay.jetty</groupId>
       <artifactId>jetty</artifactId>
diff --git a/hadoop-common-project/hadoop-common/CHANGES.txt b/hadoop-common-project/hadoop-common/CHANGES.txt
index e75693eb1be..fff26db29be 100644
--- a/hadoop-common-project/hadoop-common/CHANGES.txt
+++ b/hadoop-common-project/hadoop-common/CHANGES.txt
@@ -708,6 +708,8 @@ Release 2.8.0 - UNRELEASED
     fails intermittently due to assumption that a lease error will be thrown.
     (Gaurav Kanade via cnauroth)
 
+    HADOOP-12526. there are duplicate dependency definitions in pom's (sjlee)
+
   OPTIMIZATIONS
 
     HADOOP-12051. ProtobufRpcEngine.invoke() should use Exception.toString()
diff --git a/hadoop-project/pom.xml b/hadoop-project/pom.xml
index cf58a1ddea4..940efda9590 100644
--- a/hadoop-project/pom.xml
+++ b/hadoop-project/pom.xml
@@ -1117,7 +1117,6 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-enforcer-plugin</artifactId>
-        <inherited>false</inherited>
         <configuration>
           <rules>
             <requireMavenVersion>
@@ -1135,6 +1134,7 @@
               <goal>enforce</goal>
             </goals>
             <phase>pre-clean</phase>
+            <inherited>false</inherited>
           </execution>
           <execution>
             <id>default</id>
@@ -1142,6 +1142,7 @@
               <goal>enforce</goal>
             </goals>
             <phase>validate</phase>
+            <inherited>false</inherited>
           </execution>
           <execution>
             <id>site</id>
@@ -1149,6 +1150,21 @@
               <goal>enforce</goal>
             </goals>
             <phase>pre-site</phase>
+            <inherited>false</inherited>
+          </execution>
+          <execution>
+            <id>depcheck</id>
+            <configuration>
+              <rules>
+                <DependencyConvergence>
+                  <uniqueVersions>true</uniqueVersions>
+                </DependencyConvergence>
+              </rules>
+            </configuration>
+            <goals>
+              <goal>enforce</goal>
+            </goals>
+            <phase>verify</phase>
           </execution>
         </executions>
       </plugin>
@@ -1200,26 +1216,6 @@
           <includeReports>false</includeReports>
         </configuration>
       </plugin>
-      <plugin>
-        <groupId>org.apache.maven.plugins</groupId>
-        <artifactId>maven-enforcer-plugin</artifactId>
-        <executions>
-          <execution>
-            <id>depcheck</id>
-            <configuration>
-              <rules>
-                <DependencyConvergence>
-                  <uniqueVersions>true</uniqueVersions> 
-                </DependencyConvergence>
-              </rules>
-            </configuration>
-            <goals>
-              <goal>enforce</goal>
-            </goals>
-            <phase>verify</phase>
-          </execution>
-        </executions>
-      </plugin>
     </plugins>
   </build>