diff --git a/core/api/src/main/java/org/onlab/onos/net/flow/FlowRule.java b/core/api/src/main/java/org/onlab/onos/net/flow/FlowRule.java
index 8ea39e006c..fd605fc139 100644
--- a/core/api/src/main/java/org/onlab/onos/net/flow/FlowRule.java
+++ b/core/api/src/main/java/org/onlab/onos/net/flow/FlowRule.java
@@ -19,7 +19,7 @@ import org.onlab.onos.net.DeviceId;
 
 /**
  * Represents a generalized match & action pair to be applied to
- * an infrastucture device.
+ * an infrastructure device.
  */
 public interface FlowRule extends BatchOperationTarget {