diff --git a/helios-tools/src/main/java/com/spotify/helios/cli/command/JobWatchCommand.java b/helios-tools/src/main/java/com/spotify/helios/cli/command/JobWatchCommand.java
index <HASH>..<HASH> 100644
--- a/helios-tools/src/main/java/com/spotify/helios/cli/command/JobWatchCommand.java
+++ b/helios-tools/src/main/java/com/spotify/helios/cli/command/JobWatchCommand.java
@@ -72,6 +72,7 @@ public class JobWatchCommand extends MultiTargetControlCommand {
         .help("Job reference");
 
     intervalArg = parser.addArgument("--interval")
+        .type(Integer.class)
         .setDefault(1)
         .help("polling interval, default 1 second");
Fix arg parse for watch command