diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/Transport.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/Transport.java
index 271f462aa..50eca21c6 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/Transport.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/Transport.java
@@ -76,6 +76,7 @@ public enum Operation {
 		PUSH;
 	}
 
+	// Use weak references to enable unloading dynamically loaded protocols
 	private static final List<WeakReference<TransportProtocol>> protocols =
 		new CopyOnWriteArrayList<>();