diff --git a/providence-tools-rpc/src/main/java/net/morimekta/providence/tools/rpc/RPCOptions.java b/providence-tools-rpc/src/main/java/net/morimekta/providence/tools/rpc/RPCOptions.java
index <HASH>..<HASH> 100644
--- a/providence-tools-rpc/src/main/java/net/morimekta/providence/tools/rpc/RPCOptions.java
+++ b/providence-tools-rpc/src/main/java/net/morimekta/providence/tools/rpc/RPCOptions.java
@@ -204,7 +204,8 @@ public class RPCOptions extends CommonOptions {
                             .collect(Collectors.toSet()));
 
             throw new ArgumentException(
-                         "Unknown service %s in %s.\nFound %s",
+                         "Unknown service %s in %s.\n" +
+                         "Found %s",
                          service, namespace,
                          services.size() == 0 ? "none" : Strings.join(", ", services));
         }
Exception nitpick in RPC tool.