Index: texmf-dist/scripts/pdfjam/pdfjam
--- texmf-dist/scripts/pdfjam/pdfjam.orig
+++ texmf-dist/scripts/pdfjam/pdfjam
@@ -386,24 +386,7 @@ suffix='pdfjam'            ##  Default filename suffix
 ##                           not specified in a --batch call.
 ##
 preamble=''                ##  Default LaTeX preamble string.
-##
-##  Guess default paper size from locale if possible, otherwise A4
-##
-if command -v locale >/dev/null ; then
-    paperheight=$(locale -k LC_PAPER | sed -e '1!d' -e 's/.*=//') ;
-    case $paperheight in
-	297)
-	    paper='a4paper' ;
-	    ;;
-	279)
-	    paper='letterpaper' ;
-	    ;;
-	*)
-	    paper='a4paper' ;
-	    ;;
-    esac
-else paper='a4paper' ;  ## fallback paper size is ISO A4
-fi
+paper='a4paper'
 ##
 ##  END OF SETTINGS MADE DIRECTLY WITHIN THE SCRIPT
 ##