diff --git a/src/KMLFileHelper.cc b/src/KMLFileHelper.cc
index f35b725162edb6eb79eb80a1f59d1a97d5e2d42c..620242d0f2519a3320bd51f45cd41fe9e21b93b7 100644
--- a/src/KMLFileHelper.cc
+++ b/src/KMLFileHelper.cc
@@ -12,6 +12,8 @@
 #include <QFile>
 #include <QVariant>
 
+const char* KMLFileHelper::_errorPrefix = QT_TR_NOOP("KML file load failed. %1");
+
 QDomDocument KMLFileHelper::loadFile(const QString& kmlFile, QString& errorString)
 {
     QFile file(kmlFile);
@@ -19,12 +21,12 @@ QDomDocument KMLFileHelper::loadFile(const QString& kmlFile, QString& errorStrin
     errorString.clear();
 
     if (!file.exists()) {
-        errorString = tr("File not found: %1").arg(kmlFile);
+        errorString = QString(_errorPrefix).arg(tr("File not found: %1").arg(kmlFile));
         return QDomDocument();
     }
 
     if (!file.open(QIODevice::ReadOnly)) {
-        errorString = tr("Unable to open file: %1 error: $%2").arg(kmlFile).arg(file.errorString());
+        errorString = QString(_errorPrefix).arg(tr("Unable to open file: %1 error: $%2").arg(kmlFile).arg(file.errorString()));
         return QDomDocument();
     }
 
@@ -32,7 +34,7 @@ QDomDocument KMLFileHelper::loadFile(const QString& kmlFile, QString& errorStrin
     QString errorMessage;
     int errorLine;
     if (!doc.setContent(&file, &errorMessage, &errorLine)) {
-        errorString = tr("Unable to parse KML file: %1 error: %2 line: %3").arg(kmlFile).arg(errorMessage).arg(errorLine);
+        errorString = QString(_errorPrefix).arg(tr("Unable to parse KML file: %1 error: %2 line: %3").arg(kmlFile).arg(errorMessage).arg(errorLine));
         return QDomDocument();
     }
 
@@ -68,7 +70,7 @@ KMLFileHelper::KMLFileContents KMLFileHelper::determineFileContents(const QStrin
         return Polyline;
     }
 
-    errorString = tr("No known type found in KML file.");
+    errorString = QString(_errorPrefix).arg(tr("No supported type found in KML file."));
     return Error;
 }
 
@@ -84,13 +86,13 @@ bool KMLFileHelper::loadPolygonFromFile(const QString& kmlFile, QList<QGeoCoordi
 
     QDomNodeList rgNodes = domDocument.elementsByTagName("Polygon");
     if (rgNodes.count() == 0) {
-        errorString = tr("Unable to find Polygon node in KML");
+        errorString = QString(_errorPrefix).arg(tr("Unable to find Polygon node in KML"));
         return false;
     }
 
     QDomNode coordinatesNode = rgNodes.item(0).namedItem("outerBoundaryIs").namedItem("LinearRing").namedItem("coordinates");
     if (coordinatesNode.isNull()) {
-        errorString = tr("Internal error: Unable to find coordinates node in KML");
+        errorString = QString(_errorPrefix).arg(tr("Internal error: Unable to find coordinates node in KML"));
         return false;
     }
 
@@ -145,13 +147,13 @@ bool KMLFileHelper::loadPolylineFromFile(const QString& kmlFile, QList<QGeoCoord
 
     QDomNodeList rgNodes = domDocument.elementsByTagName("LineString");
     if (rgNodes.count() == 0) {
-        errorString = tr("Unable to find LineString node in KML");
+        errorString = QString(_errorPrefix).arg(tr("Unable to find LineString node in KML"));
         return false;
     }
 
     QDomNode coordinatesNode = rgNodes.item(0).namedItem("coordinates");
     if (coordinatesNode.isNull()) {
-        errorString = tr("Internal error: Unable to find coordinates node in KML");
+        errorString = QString(_errorPrefix).arg(tr("Internal error: Unable to find coordinates node in KML"));
         return false;
     }
 
diff --git a/src/KMLFileHelper.h b/src/KMLFileHelper.h
index a3a05ec478df02825f1fe013a3e9d5f39e909519..ece86b2aa98b303c4eb26f8157db7d4f641def63 100644
--- a/src/KMLFileHelper.h
+++ b/src/KMLFileHelper.h
@@ -34,4 +34,7 @@ public:
     static QDomDocument loadFile(const QString& kmlFile, QString& errorString);
     static bool loadPolygonFromFile(const QString& kmlFile, QList<QGeoCoordinate>& vertices, QString& errorString);
     static bool loadPolylineFromFile(const QString& kmlFile, QList<QGeoCoordinate>& coords, QString& errorString);
+
+private:
+    static const char* _errorPrefix;
 };