diff --git a/wp-gpx-maps_utils_nggallery.php b/wp-gpx-maps_utils_nggallery.php
index c18bd4b..aafe695 100644
--- a/wp-gpx-maps_utils_nggallery.php
+++ b/wp-gpx-maps_utils_nggallery.php
@@ -39,8 +39,10 @@ function getNGGalleryImages( $ngGalleries, $ngImages, $dt, $lat, $lon, $dtoffset
 			if ( is_callable( 'exif_read_data' ) ) {
 				$exif = @exif_read_data( $p->imagePath );
 				if ( $exif !== false ) {
-					$item['lon'] = getExifGps( $exif['GPSLongitude'], $exif['GPSLongitudeRef'] );
-					$item['lat'] = getExifGps( $exif['GPSLatitude'], $exif['GPSLatitudeRef'] );
+					$item['lon'] = (array_key_exists('GPSLongiture', $exif) and array_key_exists('GPSLongitudeRef', $exif)) ? 
+                                                getExifGps( $exif['GPSLongitude'], $exif['GPSLongitudeRef'] ) : 0;
+					$item['lat'] = (array_key_exists('GPSLatitude', $exif) and array_key_exists('GPSLatitudeRef', $exif)) ? 
+                                                getExifGps( $exif['GPSLatitude'], $exif['GPSLatitudeRef'] ) : 0;
 					if ( ( $item['lat'] != 0 ) || ( $item['lon'] != 0 ) ) {
 						$result[] = $item;
 					} elseif ( isset( $p->imagedate ) ) {