diff --git a/src/calibre/ebooks/pdf/render/engine.py b/src/calibre/ebooks/pdf/render/engine.py
index 047084d9af..47ed68f60b 100644
--- a/src/calibre/ebooks/pdf/render/engine.py
+++ b/src/calibre/ebooks/pdf/render/engine.py
@@ -306,8 +306,8 @@ class PdfEngine(QPaintEngine):
         image = pixmap.toImage()
         ref = self.add_image(image, pixmap.cacheKey())
         if ref is not None:
-            self.pdf.draw_image(rect.x(), rect.y(), rect.width(), rect.height(),
-                            ref)
+            self.pdf.draw_image(rect.x(), rect.height()+rect.y(), rect.width(),
+                                -rect.height(), ref)
 
     @store_error
     def drawImage(self, rect, image, source_rect, flags=Qt.AutoColor):
@@ -316,8 +316,8 @@ class PdfEngine(QPaintEngine):
                  image.copy(source_rect))
         ref = self.add_image(image, image.cacheKey())
         if ref is not None:
-            self.pdf.draw_image(rect.x(), rect.y(), rect.width(), rect.height(),
-                            ref)
+            self.pdf.draw_image(rect.x(), rect.height()+rect.y(), rect.width(),
+                                -rect.height(), ref)
 
     def add_image(self, img, cache_key):
         if img.isNull(): return
diff --git a/src/calibre/ebooks/pdf/render/serialize.py b/src/calibre/ebooks/pdf/render/serialize.py
index 90e0558fe7..9fe89cfafb 100644
--- a/src/calibre/ebooks/pdf/render/serialize.py
+++ b/src/calibre/ebooks/pdf/render/serialize.py
@@ -423,10 +423,9 @@ class PDFStream(object):
         self.objects.commit(r, self.stream)
         return r
 
-    def draw_image(self, x, y, w, h, imgref):
+    def draw_image(self, x, y, xscale, yscale, imgref):
         name = self.current_page.add_image(imgref)
-        sx, sy = w, h
-        self.current_page.write('q %g 0 0 %g %g %g cm '%(sx, -sy, x, y+h))
+        self.current_page.write('q %g 0 0 %g %g %g cm '%(xscale, yscale, x, y))
         serialize(Name(name), self.current_page)
         self.current_page.write_line(' Do Q')