2 files changed, 2 insertions, 2 deletions
diff --git a/text.c b/text.c
index eb4058d..096a8b7 100644
--- a/text.c
+++ b/text.c
@@ -1641,7 +1641,7 @@ char *text_bytes_alloc0(const Text *txt, size_t pos, size_t len) {
 	return buf;
 }
 
-size_t text_size(Text *txt) {
+size_t text_size(const Text *txt) {
 	return txt->size;
 }
 
diff --git a/text.h b/text.h
index 03a1001..de73559 100644
--- a/text.h
+++ b/text.h
@@ -119,7 +119,7 @@ void text_free(Text*);
  * @{
  */
 /** Return the size in bytes of the whole text. */
-size_t text_size(Text*);
+size_t text_size(const Text*);
 /**
  * Get file information at time of load or last save, whichever happened more
  * recently.