diff --git a/src/gpx.h b/src/gpx.h
index 06120fa1..d3407d2c 100644
--- a/src/gpx.h
+++ b/src/gpx.h
@@ -12,7 +12,7 @@
 class GPX
 {
 public:
-	GPX() : _parser(_tracks, _waypoints) {}
+	GPX() : _parser(_tracks, _waypoints), _errorLine(0) {}
 	bool loadFile(const QString &fileName);
 	const QString &errorString() const {return _error;}
 	int errorLine() const {return _errorLine;}
diff --git a/src/poi.h b/src/poi.h
index 8610bd3f..a989c5b8 100644
--- a/src/poi.h
+++ b/src/poi.h
@@ -11,6 +11,7 @@
 class POI
 {
 public:
+	POI() : _errorLine(0) {}
 	bool loadFile(const QString &fileName);
 	QString errorString() const {return _error;}
 	int errorLine() const {return _errorLine;}