2 files changed, 2 insertions, 2 deletions
diff --git a/text.c b/text.c
index 3fcc1d0..7357cf2 100644
--- a/text.c
+++ b/text.c
@@ -1139,7 +1139,7 @@ bool text_saveat_method(Text *txt, int dirfd, const char *filename, enum TextSav
 	return text_save_commit(ctx);
 }
 
-ssize_t text_save_write_range(TextSave *ctx, Filerange *range) {
+ssize_t text_save_write_range(TextSave *ctx, const Filerange *range) {
 	return text_write_range(ctx->txt, range, ctx->fd);
 }
 
diff --git a/text.h b/text.h
index 8241df0..adac79b 100644
--- a/text.h
+++ b/text.h
@@ -373,7 +373,7 @@ TextSave *text_save_begin(Text*, int dirfd, const char *filename, enum TextSaveM
  * Write file range.
  * @return The number of bytes written or ``-1`` in case of an error.
  */
-ssize_t text_save_write_range(TextSave*, Filerange*);
+ssize_t text_save_write_range(TextSave*, const Filerange*);
 /**
  * Commit changes to disk.
  * @return Whether changes have been saved.