diff --git a/tutorial/Gfx.pmod b/tutorial/Gfx.pmod
index 26032d4c52fe90f204c631cbd16fa333bf4294f3..ca2bb1da5e9cbc6fbf9e2beabe58157189cb9234 100644
--- a/tutorial/Gfx.pmod
+++ b/tutorial/Gfx.pmod
@@ -56,7 +56,7 @@ string mkjpg(mixed o,void|mapping options)
 {
   if(!options) options=(["quality":100]);
    string g=Image.JPEG.encode(o,options);
-   return cached_write(g,"jpeg");
+   return cached_write(g,"jpg"); /* this has to be jpg, or pdftex won't work! -Hubbe */
 }
 
 #define PAPER_COLOUR 255,255,255
diff --git a/tutorial/pdflatex.pike b/tutorial/pdflatex.pike
index 9c568f68918d56f01754bfe3563e9e0c858450b2..117b4bcc96a2aae88e29c7c4e21124fc3054ecdd 100644
--- a/tutorial/pdflatex.pike
+++ b/tutorial/pdflatex.pike
@@ -29,7 +29,8 @@ string convert_gfx(TAG tag)
   string file;
   float dpi;
   [file,dpi]=Gfx.convert( tag->params,
-			  "png|jpg|pdf",
+//			  "png|jpg|pdf",
+			  "jpg|pdf",
 			  300.0,
 			  tag->data && Sgml.get_text(tag->data));