diff --git a/README.md b/README.md
index ef0b405..9b219a5 100644
--- a/README.md
+++ b/README.md
@@ -124,4 +124,7 @@ You can then test the converter using:
 Note that the package can also be used as a library as follows:
 
 	import img2pdf
-	pdf_bytes = img2pdf('test.jpg', dpi=150)
+	pdf_bytes = img2pdf.convert(['test.jpg'], dpi=150, x=0, y=0)
+
+	file = open("name.pdf","wb")
+	file.write(pdf_bytes)
diff --git a/src/img2pdf.py b/src/img2pdf.py
index 395ee31..45601b4 100755
--- a/src/img2pdf.py
+++ b/src/img2pdf.py
@@ -285,6 +285,9 @@ def convert(images, dpi, x, y, title=None, author=None, creator=None, producer=N
             pdf_x, pdf_y = x, x*height/width
         elif not x:
             pdf_x, pdf_y = y*width/height, y
+        else:
+            pdf_x = x
+            pdf_y = y
 
         pdf.addimage(color, width, height, imgformat, imgdata, pdf_x, pdf_y)