diff --git a/scr/src/main/java/org/apache/felix/scr/impl/helper/ComponentServiceObjectsHelper.java b/scr/src/main/java/org/apache/felix/scr/impl/helper/ComponentServiceObjectsHelper.java
index 634d192..82377d2 100644
--- a/scr/src/main/java/org/apache/felix/scr/impl/helper/ComponentServiceObjectsHelper.java
+++ b/scr/src/main/java/org/apache/felix/scr/impl/helper/ComponentServiceObjectsHelper.java
@@ -97,6 +97,7 @@
         	}
             cso.close();
         }
+        prototypeInstances.remove(ref);
     }
 
     public <T> T getPrototypeRefInstance(final ServiceReference<T> ref, ServiceObjects<T> serviceObjects)