diff --git a/core/api/src/main/java/org/onlab/onos/net/flow/instructions/Instructions.java b/core/api/src/main/java/org/onlab/onos/net/flow/instructions/Instructions.java
index 3b1d433..0bdff77 100644
--- a/core/api/src/main/java/org/onlab/onos/net/flow/instructions/Instructions.java
+++ b/core/api/src/main/java/org/onlab/onos/net/flow/instructions/Instructions.java
@@ -27,7 +27,7 @@
 import org.onlab.onos.net.flow.instructions.L2ModificationInstruction.ModEtherInstruction;
 import org.onlab.onos.net.flow.instructions.L3ModificationInstruction.L3SubType;
 import org.onlab.onos.net.flow.instructions.L3ModificationInstruction.ModIPInstruction;
-import org.onlab.packet.IpPrefix;
+import org.onlab.packet.IpAddress;
 import org.onlab.packet.MacAddress;
 import org.onlab.packet.VlanId;
 
@@ -115,7 +115,7 @@
      * @param addr the ip address to modify to.
      * @return a L3 modification
      */
-    public static L3ModificationInstruction modL3Src(IpPrefix addr) {
+    public static L3ModificationInstruction modL3Src(IpAddress addr) {
         checkNotNull(addr, "Src l3 address cannot be null");
         return new ModIPInstruction(L3SubType.IP_SRC, addr);
     }
@@ -125,7 +125,7 @@
      * @param addr the ip address to modify to.
      * @return a L3 modification
      */
-    public static L3ModificationInstruction modL3Dst(IpPrefix addr) {
+    public static L3ModificationInstruction modL3Dst(IpAddress addr) {
         checkNotNull(addr, "Dst l3 address cannot be null");
         return new ModIPInstruction(L3SubType.IP_DST, addr);
     }
diff --git a/core/api/src/main/java/org/onlab/onos/net/flow/instructions/L3ModificationInstruction.java b/core/api/src/main/java/org/onlab/onos/net/flow/instructions/L3ModificationInstruction.java
index 609d245..89a8cda 100644
--- a/core/api/src/main/java/org/onlab/onos/net/flow/instructions/L3ModificationInstruction.java
+++ b/core/api/src/main/java/org/onlab/onos/net/flow/instructions/L3ModificationInstruction.java
@@ -19,7 +19,7 @@
 
 import java.util.Objects;
 
-import org.onlab.packet.IpPrefix;
+import org.onlab.packet.IpAddress;
 
 /**
  * Abstraction of a single traffic treatment step.
@@ -60,9 +60,9 @@
     public static final class ModIPInstruction extends L3ModificationInstruction {
 
         private final L3SubType subtype;
-        private final IpPrefix ip;
+        private final IpAddress ip;
 
-        public ModIPInstruction(L3SubType subType, IpPrefix addr) {
+        public ModIPInstruction(L3SubType subType, IpAddress addr) {
 
             this.subtype = subType;
             this.ip = addr;
@@ -73,7 +73,7 @@
             return this.subtype;
         }
 
-        public IpPrefix ip() {
+        public IpAddress ip() {
             return this.ip;
         }