diff --git a/rtengine/imageio.cc b/rtengine/imageio.cc
index 8eae7ff74..89e182769 100644
--- a/rtengine/imageio.cc
+++ b/rtengine/imageio.cc
@@ -787,7 +787,7 @@ int ImageIO::saveTIFF (Glib::ustring fname, int bps, bool uncompressed) {
 								
 								exif->write (8, buffer);
 								write (TIFFFileno (out), buffer+8, exif_size);
-								delete buffer;
+								delete[] buffer;
 								// let libtiff know that scanlines or any other following stuff should go 
 								// at a different offset:
 								TIFFSetWriteOffset (out, exif_size+8);