diff --git a/history.go b/history.go
index c28430a..81a8705 100644
--- a/history.go
+++ b/history.go
@@ -38,6 +38,10 @@ func newFileHistory() (*fileHistory, error) {
 }
 
 func (h *fileHistory) Write(line string) (int, error) {
+	if line == "" {
+		return len(h.items), nil
+	}
+
 	_, err := h.f.WriteString(line + "\n")
 	if err != nil {
 		return 0, err