1 files changed, 1 insertions, 1 deletions

diff --git a/src/undo.c b/src/undo.c
index 0a5da853dc0..214beaeb9ea 100644
--- a/src/undo.c
+++ b/src/undo.c
@@ -34,7 +34,7 @@ static ptrdiff_t last_boundary_position;
    an undo-boundary.  */
 static Lisp_Object pending_boundary;
 
-void
+static void
 run_undoable_change (void)
 {
   call0 (Qundo_auto__undoable_change);