diff --git a/WHATSNEW b/WHATSNEW
index f74dfb732..632253961 100644
--- a/WHATSNEW
+++ b/WHATSNEW
@@ -13,6 +13,9 @@ Changes that could break older environments:
 Fixed bugs:
 -----------
 
+ * Launcher fixed to pass the right class loader parent.
+   Bugzilla Report 48633.
+
  * <junitreport> mishandled ${line.separator}.
    Bugzilla Report 51049.
 
diff --git a/src/main/org/apache/tools/ant/launch/Launcher.java b/src/main/org/apache/tools/ant/launch/Launcher.java
index 53414446e..82bf7a118 100644
--- a/src/main/org/apache/tools/ant/launch/Launcher.java
+++ b/src/main/org/apache/tools/ant/launch/Launcher.java
@@ -269,7 +269,7 @@ public class Launcher {
 
         setProperty(JAVA_CLASS_PATH, baseClassPath.toString());
 
-        URLClassLoader loader = new URLClassLoader(jars);
+        URLClassLoader loader = new URLClassLoader(jars, Launcher.class.getClassLoader());
         Thread.currentThread().setContextClassLoader(loader);
         Class mainClass = null;
         int exitCode = 0;