diff --git a/WHATSNEW b/WHATSNEW
index dc9f77af0..339c2d0ba 100644
--- a/WHATSNEW
+++ b/WHATSNEW
@@ -125,6 +125,8 @@ Fixed bugs:
   cases; when split file-property, files were only created if
   writes were performed.
 
+* fixed case handling of scriptdef attributes and elements.
+
 Other changes:
 --------------
 
diff --git a/src/main/org/apache/tools/ant/taskdefs/optional/script/ScriptDef.java b/src/main/org/apache/tools/ant/taskdefs/optional/script/ScriptDef.java
index 8d0234315..a4e1f08f9 100644
--- a/src/main/org/apache/tools/ant/taskdefs/optional/script/ScriptDef.java
+++ b/src/main/org/apache/tools/ant/taskdefs/optional/script/ScriptDef.java
@@ -27,6 +27,7 @@ import org.apache.tools.ant.taskdefs.DefBase;
 import java.util.Map;
 import java.util.HashMap;
 import java.util.List;
+import java.util.Locale;
 import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.Set;
@@ -93,7 +94,7 @@ public class ScriptDef extends DefBase {
          * @param name the attribute name
          */
         public void setName(String name) {
-            this.name = name;
+            this.name = name.toLowerCase(Locale.US);
         }
     }
 
@@ -125,7 +126,7 @@ public class ScriptDef extends DefBase {
          * @param name the name of this nested element
          */
         public void setName(String name) {
-            this.name = name;
+            this.name = name.toLowerCase(Locale.US);
         }
 
         /**