diff --git a/utils/misc/src/main/java/org/onlab/packet/IpPrefix.java b/utils/misc/src/main/java/org/onlab/packet/IpPrefix.java
index 84acb82..21cec5c 100644
--- a/utils/misc/src/main/java/org/onlab/packet/IpPrefix.java
+++ b/utils/misc/src/main/java/org/onlab/packet/IpPrefix.java
@@ -120,7 +120,7 @@
 
         int mask = DEFAULT_MASK;
         if (parts.length == 2) {
-            mask = Integer.valueOf(parts[1]);
+            mask = Integer.parseInt(parts[1]);
             if (mask > MAX_INET_MASK) {
                 throw new IllegalArgumentException(
                         "Value of subnet mask cannot exceed "