diff --git a/jetty-osgi/jetty-osgi-boot/src/main/java/org/eclipse/jetty/osgi/boot/utils/internal/PackageAdminServiceTracker.java b/jetty-osgi/jetty-osgi-boot/src/main/java/org/eclipse/jetty/osgi/boot/utils/internal/PackageAdminServiceTracker.java
index 66796621d54..ce8127a60a3 100644
--- a/jetty-osgi/jetty-osgi-boot/src/main/java/org/eclipse/jetty/osgi/boot/utils/internal/PackageAdminServiceTracker.java
+++ b/jetty-osgi/jetty-osgi-boot/src/main/java/org/eclipse/jetty/osgi/boot/utils/internal/PackageAdminServiceTracker.java
@@ -169,7 +169,7 @@ public class PackageAdminServiceTracker implements ServiceListener
     protected List<Bundle> getRequiredBundles(Bundle bundle, PackageAdmin admin)
     {
     	List<Bundle> res = new ArrayList<Bundle>();
-    	String requiredBundleHeader = bundle.getHeaders().get("Require-Bundle");
+    	String requiredBundleHeader = (String)bundle.getHeaders().get("Require-Bundle");
     	if (requiredBundleHeader == null)
     	{
     		return res;