diff --git a/WHATSNEW b/WHATSNEW
index c0c5de6b2..c2d0fad13 100644
--- a/WHATSNEW
+++ b/WHATSNEW
@@ -96,6 +96,9 @@ Other changes:
 
 * New attribute alwayslog for <redirector> type.
 
+* Use org.apache.log4j.Logger instead of org.apache.log4j.Category.
+  Bugzilla Report 31951.
+
 Fixed bugs:
 -----------
 
diff --git a/build.xml b/build.xml
index 7d19b7e75..6def20a0c 100644
--- a/build.xml
+++ b/build.xml
@@ -461,7 +461,7 @@
                classname="jdepend.framework.JDepend"
                classpathref="classpath"/>
     <available property="log4j.present"
-               classname="org.apache.log4j.Category"
+               classname="org.apache.log4j.Logger"
                classpathref="classpath"/>
     <available property="commons.logging.present"
                classname="org.apache.commons.logging.LogFactory"
@@ -1652,4 +1652,4 @@
           description="--> creates a minimum distribution in ./dist"
           depends="dist-lite"/>
 
-</project>
\ No newline at end of file
+</project>
diff --git a/src/main/org/apache/tools/ant/listener/Log4jListener.java b/src/main/org/apache/tools/ant/listener/Log4jListener.java
index a78612b81..4642fe92b 100644
--- a/src/main/org/apache/tools/ant/listener/Log4jListener.java
+++ b/src/main/org/apache/tools/ant/listener/Log4jListener.java
@@ -17,7 +17,7 @@
 
 package org.apache.tools.ant.listener;
 
-import org.apache.log4j.Category;
+import org.apache.log4j.Logger;
 import org.apache.log4j.helpers.NullEnumeration;
 import org.apache.tools.ant.BuildEvent;
 import org.apache.tools.ant.BuildListener;
@@ -40,12 +40,12 @@ public class Log4jListener implements BuildListener {
      */
     public Log4jListener() {
         initialized = false;
-        Category cat = Category.getInstance("org.apache.tools.ant");
-        Category rootCat = Category.getRoot();
-        if (!(rootCat.getAllAppenders() instanceof NullEnumeration)) {
+        Logger log = Logger.getLogger("org.apache.tools.ant");
+        Logger rootLog = Logger.getRootLogger();
+        if (!(rootLog.getAllAppenders() instanceof NullEnumeration)) {
             initialized = true;
         } else {
-            cat.error("No log4j.properties in build area");
+            log.error("No log4j.properties in build area");
         }
     }
 
@@ -54,8 +54,8 @@ public class Log4jListener implements BuildListener {
      */
     public void buildStarted(BuildEvent event) {
         if (initialized) {
-            Category cat = Category.getInstance(Project.class.getName());
-            cat.info("Build started.");
+            Logger log = Logger.getLogger(Project.class.getName());
+            log.info("Build started.");
         }
     }
 
@@ -64,11 +64,11 @@ public class Log4jListener implements BuildListener {
      */
     public void buildFinished(BuildEvent event) {
         if (initialized) {
-            Category cat = Category.getInstance(Project.class.getName());
+            Logger log = Logger.getLogger(Project.class.getName());
             if (event.getException() == null) {
-                cat.info("Build finished.");
+                log.info("Build finished.");
             } else {
-                cat.error("Build finished with error.", event.getException());
+                log.error("Build finished with error.", event.getException());
             }
         }
     }
@@ -78,8 +78,8 @@ public class Log4jListener implements BuildListener {
      */
     public void targetStarted(BuildEvent event) {
         if (initialized) {
-            Category cat = Category.getInstance(Target.class.getName());
-            cat.info("Target \"" + event.getTarget().getName() + "\" started.");
+            Logger log = Logger.getLogger(Target.class.getName());
+            log.info("Target \"" + event.getTarget().getName() + "\" started.");
         }
     }
 
@@ -89,7 +89,7 @@ public class Log4jListener implements BuildListener {
     public void targetFinished(BuildEvent event) {
         if (initialized) {
             String targetName = event.getTarget().getName();
-            Category cat = Category.getInstance(Target.class.getName());
+            Logger cat = Logger.getLogger(Target.class.getName());
             if (event.getException() == null) {
                 cat.info("Target \"" + targetName + "\" finished.");
             } else {
@@ -105,8 +105,8 @@ public class Log4jListener implements BuildListener {
     public void taskStarted(BuildEvent event) {
         if (initialized) {
             Task task = event.getTask();
-            Category cat = Category.getInstance(task.getClass().getName());
-            cat.info("Task \"" + task.getTaskName() + "\" started.");
+            Logger log = Logger.getLogger(task.getClass().getName());
+            log.info("Task \"" + task.getTaskName() + "\" started.");
         }
     }
 
@@ -116,11 +116,11 @@ public class Log4jListener implements BuildListener {
     public void taskFinished(BuildEvent event) {
         if (initialized) {
             Task task = event.getTask();
-            Category cat = Category.getInstance(task.getClass().getName());
+            Logger log = Logger.getLogger(task.getClass().getName());
             if (event.getException() == null) {
-                cat.info("Task \"" + task.getTaskName() + "\" finished.");
+                log.info("Task \"" + task.getTaskName() + "\" finished.");
             } else {
-                cat.error("Task \"" + task.getTaskName()
+                log.error("Task \"" + task.getTaskName()
                     + "\" finished with error.", event.getException());
             }
         }
@@ -139,26 +139,26 @@ public class Log4jListener implements BuildListener {
                 }
             }
 
-            Category cat
-                = Category.getInstance(categoryObject.getClass().getName());
+            Logger log
+                = Logger.getLogger(categoryObject.getClass().getName());
             switch (event.getPriority()) {
                 case Project.MSG_ERR:
-                    cat.error(event.getMessage());
+                    log.error(event.getMessage());
                     break;
                 case Project.MSG_WARN:
-                    cat.warn(event.getMessage());
+                    log.warn(event.getMessage());
                     break;
                 case Project.MSG_INFO:
-                    cat.info(event.getMessage());
+                    log.info(event.getMessage());
                     break;
                 case Project.MSG_VERBOSE:
-                    cat.debug(event.getMessage());
+                    log.debug(event.getMessage());
                     break;
                 case Project.MSG_DEBUG:
-                    cat.debug(event.getMessage());
+                    log.debug(event.getMessage());
                     break;
                 default:
-                    cat.error(event.getMessage());
+                    log.error(event.getMessage());
                     break;
             }
         }