diff --git a/ebt/ebt.go b/ebt/ebt.go
index 7b0985b..dd79851 100644
--- a/ebt/ebt.go
+++ b/ebt/ebt.go
@@ -9,6 +9,7 @@ import (
 func Walk(t *tree.Tree, ch chan int) {
 	// do it as a nested closure so that I can control the call to close so 
 	// that I can use the range-based forloop in main.main
+	defer close(ch)
 	var walk func(t *tree.Tree)
 	walk = func(t *tree.Tree) {
 		if t != nil {
@@ -18,7 +19,6 @@ func Walk(t *tree.Tree, ch chan int) {
 		}
 	}
 	walk(t)
-	close(ch)
 }
 
 // Same determines whether the trees