diff --git a/src/imageio/imageio_tiff.c b/src/imageio/imageio_tiff.c
index 0fb60dc5e003..701708ed59cb 100644
--- a/src/imageio/imageio_tiff.c
+++ b/src/imageio/imageio_tiff.c
@@ -451,8 +451,8 @@ dt_imageio_retval_t dt_imageio_open_tiff(dt_image_t *img, const char *filename,
     return DT_IMAGEIO_CACHE_FULL;
   }
 
-  // flag the image buffer properly depending on sample format
-  if(t.sampleformat == SAMPLEFORMAT_IEEEFP)
+  // Flag the image properly depending on bit depth
+  if(t.bpp > 8)
   {
     // HDR TIFF
     t.image->flags &= ~DT_IMAGE_LDR;