diff --git a/src/data/oziparsers.cpp b/src/data/oziparsers.cpp
index cca2f734..164aada6 100644
--- a/src/data/oziparsers.cpp
+++ b/src/data/oziparsers.cpp
@@ -24,7 +24,8 @@ bool PLTParser::parse(QFile *file, QList<TrackData> &tracks,
 		QByteArray line = file->readLine();
 
 		if (_errorLine == 1) {
-			if (!line.trimmed().startsWith("OziExplorer Track Point File")) {
+			QString fileType(QString::fromUtf8(line).trimmed());
+			if (!fileType.startsWith("OziExplorer Track Point File")) {
 				_errorString = "Not a PLT file";
 				return false;
 			}
@@ -107,7 +108,8 @@ bool RTEParser::parse(QFile *file, QList<TrackData> &tracks,
 		QByteArray line = file->readLine();
 
 		if (_errorLine == 1) {
-			if (!line.trimmed().startsWith("OziExplorer Route File")) {
+			QString fileType(QString::fromUtf8(line).trimmed());
+			if (!fileType.startsWith("OziExplorer Route File")) {
 				_errorString = "Not a RTE file";
 				return false;
 			}
@@ -201,7 +203,8 @@ bool WPTParser::parse(QFile *file, QList<TrackData> &tracks,
 		QByteArray line = file->readLine();
 
 		if (_errorLine == 1) {
-			if (!line.trimmed().startsWith("OziExplorer Waypoint File")) {
+			QString fileType(QString::fromUtf8(line).trimmed());
+			if (!fileType.startsWith("OziExplorer Waypoint File")) {
 				_errorString = "Not a WPT file";
 				return false;
 			}
diff --git a/src/map/mapfile.cpp b/src/map/mapfile.cpp
index f73f4d14..581cafea 100644
--- a/src/map/mapfile.cpp
+++ b/src/map/mapfile.cpp
@@ -26,7 +26,8 @@ int MapFile::parse(QIODevice &device, QList<CalibrationPoint> &points,
 		QByteArray line = device.readLine();
 
 		if (ln == 1) {
-			if (!line.trimmed().startsWith("OziExplorer Map Data File"))
+			QString fileType(QString::fromUtf8(line).trimmed());
+			if (!fileType.startsWith("OziExplorer Map Data File"))
 				return ln;
 		} else if (ln == 2)
 			_name = line.trimmed();