diff --git a/impression/impression_canon.py b/impression/impression_canon.py
index bb61fb96..2995d969 100755
--- a/impression/impression_canon.py
+++ b/impression/impression_canon.py
@@ -422,11 +422,11 @@ class impression:
 
         if self._settings['papier'] == 'A4tr':
             options += ' -o InputSlot=SideDeck -o MediaType=OHP'
-            options += ' -o pdf-paper=571x817  -o PageSize=A4'
+            options += ' -o PageSize=A4'
         elif self._settings['papier'] == 'A4':
-            options += ' -o pdf-paper=571x817  -o PageSize=A4'
+            options += ' -o PageSize=A4'
         else:
-            options += ' -o pdf-expand -o pdf-paper=825x1166 -o PageSize=A3'
+            options += ' -o pdf-expand -o PageSize=A3'
 
         if self._settings['portrait']:
             if self._settings['recto_verso']: