diff --git a/internal/history.go b/internal/history.go
index 358a6ab..b3ef0b0 100644
--- a/internal/history.go
+++ b/internal/history.go
@@ -49,6 +49,7 @@ func (this *History[T]) Push (item T) {
 	}
 
 	if len(this.stack) > this.max {
+		this.topIndex --
 		this.stack = this.stack[1:]
 	}
 }