diff --git a/gen.sh b/gen.sh
index 0d09777..95a5c20 100755
--- a/gen.sh
+++ b/gen.sh
@@ -188,7 +188,7 @@ newdataentry () {
 			test "$d" = "covers" && {
 				printf "\t<image>"${cover}"</image>\n"
 			} || {
-				fs=$(stat -c %s ${customdir}"/"${ffn})
+				fs=$(wc -c <${customdir}"/"${ffn})
 				printf "\t<link filesize=\"%d\">%s</link>\n" "${fs}" "${ffn}"
 			}
 		} || {