diff --git a/apps/learning-switch/src/main/java/org/onosproject/learningswitch/LearningSwitchSolution.java b/apps/learning-switch/src/main/java/org/onosproject/learningswitch/LearningSwitchSolution.java
index 621d16d..8dd07fd 100644
--- a/apps/learning-switch/src/main/java/org/onosproject/learningswitch/LearningSwitchSolution.java
+++ b/apps/learning-switch/src/main/java/org/onosproject/learningswitch/LearningSwitchSolution.java
@@ -16,11 +16,11 @@
 package org.onosproject.learningswitch;
 
 import com.google.common.collect.Maps;
-import org.apache.felix.scr.annotations.Activate;
-import org.apache.felix.scr.annotations.Deactivate;
-import org.apache.felix.scr.annotations.Component;
-import org.apache.felix.scr.annotations.Reference;
-import org.apache.felix.scr.annotations.ReferenceCardinality;
+import org.osgi.service.component.annotations.Activate;
+import org.osgi.service.component.annotations.Deactivate;
+import org.osgi.service.component.annotations.Component;
+import org.osgi.service.component.annotations.Reference;
+import org.osgi.service.component.annotations.ReferenceCardinality;
 import org.onlab.packet.Ethernet;
 import org.onlab.packet.MacAddress;
 import org.onosproject.core.ApplicationId;
@@ -52,13 +52,13 @@
 public class LearningSwitchSolution {
 
     // Instantiates the relevant services.
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected PacketService packetService;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected FlowRuleService flowRuleService;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected CoreService coreService;
 
     private final Logger log = LoggerFactory.getLogger(getClass());