diff --git a/gui/qt/history_list.py b/gui/qt/history_list.py
index 74304802..56ac03bf 100644
--- a/gui/qt/history_list.py
+++ b/gui/qt/history_list.py
@@ -106,7 +106,7 @@ class HistoryList(MyTreeWidget):
                 if i!=2:
                     item.setFont(i, QFont(MONOSPACE_FONT))
                     item.setTextAlignment(i, Qt.AlignVCenter)
-            if value < 0:
+            if value and value < 0:
                 item.setForeground(3, QBrush(QColor("#BC1E1E")))
                 item.setForeground(4, QBrush(QColor("#BC1E1E")))
             if tx_hash: