diff --git a/structure/list.go b/structure/list.go
index d158969b..01ebd2e0 100644
--- a/structure/list.go
+++ b/structure/list.go
@@ -212,7 +212,7 @@ func (l *ListStructure) RPop(key string) (interface{}, error) {
 
 	// Find the new tail
 	newTail := lst.Head
-	for i := 0; i < lst.Length-1; i++ {
+	for i := 0; i < lst.Length-2; i++ {
 		newTail = newTail.Next
 	}
 	popValue := newTail.Next.Value