diff --git a/utils/uvol/files/autopart.defaults b/utils/uvol/files/autopart.defaults
index 870cd4415..99ea09406 100644
--- a/utils/uvol/files/autopart.defaults
+++ b/utils/uvol/files/autopart.defaults
@@ -63,14 +63,14 @@ get_free_area() {
 			;;
 		[0-9]*)
 			case "$size" in
+				*"k" | *"b")
+					continue
+					;;
 				*"M")
-					[ "${size%%M}" -lt 100 ] && continue
+					[ "${size%%.*M}" -lt 100 ] && continue
 					;;
 				*"G" | *"T")
 					;;
-				*"k" | *"b")
-					continue
-					;;
 			esac
 			[ "$found" ] || echo "start=$start, size=$((end - start))"
 			found=1