diff --git a/pixelocr/gui/glyphdbedit.py b/pixelocr/gui/glyphdbedit.py
index be2aa15..650bdb5 100644
--- a/pixelocr/gui/glyphdbedit.py
+++ b/pixelocr/gui/glyphdbedit.py
@@ -106,6 +106,7 @@ class GlyphDBModel(QAbstractTableModel):
         self.glyphdb = glyphdb
         self.sortColumn = len(self.COLUMNS) - 1  # date_add ed
         self.sortOrder = Qt.DescendingOrder
+        self.values = list(self.glyphdb.values())
         self.updateData()
 
     def flags(self, index):
@@ -156,7 +157,9 @@ class GlyphDBModel(QAbstractTableModel):
         self.layoutAboutToBeChanged.emit()
         column = self.COLUMNS[self.sortColumn]
         reverse = self.sortOrder == Qt.DescendingOrder
-        self.values = sorted(self.glyphdb.values(), key=column.sortKey, reverse=reverse)
+        if len(self.values) != len(self.glyphdb.values()):
+            self.values = self.glyphdb.values()
+        self.values = sorted(self.values, key=column.sortKey, reverse=reverse)
         self.layoutChanged.emit()