1 files changed, 2 insertions, 0 deletions
diff --git a/structs.go b/structs.go
index 154af32..c65bd52 100644
--- a/structs.go
+++ b/structs.go
@@ -4,6 +4,7 @@
 package main
 
 import (
+	"sync"
 	"time"
 
 	"go.wit.com/gui"
@@ -33,6 +34,7 @@ type zookeep struct {
 }
 
 type stdTableWin struct {
+	sync.Mutex
 	win    *gadgets.GenericWindow // the machines gui window
 	box    *gui.Node              // the machines gui parent box widget
 	TB     *zoopb.MachinesTable   // the machines gui table buffer