The uninstall target for the icons looked for filenames that began with
"pspp", but the new names for the application icons don't start that way.
Fixes: 25e030629aed ("Rename icon files to match full application ID.")
                                (test ! "`printf '%s %s %s' . .. *`" = '. .. *' || test -f '*')) 2> /dev/null ; then \
                                  rm -rf $(themedir)/$$size/$$context/application-x-spss-* ; \
                                  rm -rf $(themedir)/$$size/$$context/pspp* ; \
+                                 rm -rf $(themedir)/$$size/$$context/org.fsf.pspp*; \
                        fi ; \
                done ; \
        done