diff --git a/openbr/openbr_plugin.cpp b/openbr/openbr_plugin.cpp
index 9322f5d..8860734 100644
--- a/openbr/openbr_plugin.cpp
+++ b/openbr/openbr_plugin.cpp
@@ -476,13 +476,18 @@ TemplateList TemplateList::fromGallery(const br::File &gallery)
 
 // indexes some property, assigns an integer id to each unique value of propName
 // stores the index values in "Label" of the output template list
-TemplateList TemplateList::relabel(const TemplateList &tl, const QString & propName)
+TemplateList TemplateList::relabel(const TemplateList &tl, const QString &propName)
 {
     const QList<QString> originalLabels = File::get<QString>(tl, propName);
     QHash<QString,int> labelTable;
-    foreach (const QString & label, originalLabels)
-        if (!labelTable.contains(label))
-            labelTable.insert(label, labelTable.size());
+    foreach (const QString &label, originalLabels)
+        if (!labelTable.contains(label)) {
+            int value; bool ok;
+            value = label.toInt(&ok);
+            // If the label is already an integer value we don't want to change it.
+            if (ok) labelTable.insert(label, value);
+            else    labelTable.insert(label, labelTable.size());
+        }
 
     TemplateList result = tl;
     for (int i=0; i<result.size(); i++)