diff --git a/src/tests/antunit/taskdefs/optional/propertyfile-test.xml b/src/tests/antunit/taskdefs/optional/propertyfile-test.xml
new file mode 100644
index 000000000..0ea70513b
--- /dev/null
+++ b/src/tests/antunit/taskdefs/optional/propertyfile-test.xml
@@ -0,0 +1,44 @@
+<?xml version="1.0"?>
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one or more
+  contributor license agreements.  See the NOTICE file distributed with
+  this work for additional information regarding copyright ownership.
+  The ASF licenses this file to You under the Apache License, Version 2.0
+  (the "License"); you may not use this file except in compliance with
+  the License.  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+-->
+<project default="antunit" xmlns:au="antlib:org.apache.ant.antunit">
+  <import file="../../antunit-base.xml" />
+
+  <target name="setUp">
+    <mkdir dir="${output}"/>
+  </target>
+
+  <target name="testReadWithPrefix" depends="setUp"
+          description="https://issues.apache.org/bugzilla/show_bug.cgi?id=48768">
+    <property name="test.txt" location="${output}/test.txt"/>
+    <echo file="${test.txt}"><![CDATA[
+bbb=val2
+aaa=val1
+]]></echo>
+
+    <property file="${test.txt}"/>
+    <au:assertPropertyEquals name="aaa" value="val1"/>
+    <au:assertPropertyEquals name="bbb" value="val2"/>
+    <propertyfile file="${test.txt}">
+      <entry key="bbb" value="dummy"/>
+    </propertyfile>
+
+    <property file="${test.txt}" prefix="xxx"/>
+    <au:assertPropertyEquals name="xxx.aaa" value="val1"/>
+    <au:assertPropertyEquals name="xxx.bbb" value="dummy"/>
+  </target>
+</project>