diff --git a/core/net/src/main/java/org/onosproject/net/resource/impl/LinkResourceManager.java b/core/net/src/main/java/org/onosproject/net/resource/impl/LinkResourceManager.java
index e48b2cb..9da155c 100644
--- a/core/net/src/main/java/org/onosproject/net/resource/impl/LinkResourceManager.java
+++ b/core/net/src/main/java/org/onosproject/net/resource/impl/LinkResourceManager.java
@@ -287,7 +287,7 @@
 
         Set<ResourceAllocation> allocatedRes = allocations.getResourceAllocation(link);
         Set<ResourceRequest> result = Sets.newHashSet(getAvailableResources(link));
-        result.addAll(allocatedRes);
+        result.removeAll(allocatedRes);
         return result;
     }