Doc fix.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/buffer.c b/src/buffer.c
index aec489eab56..e1e46445b1e 100644
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -1612,7 +1612,7 @@ Automatically becomes buffer-local when set in any fashion.");
     "Non-nil if self-insertion should replace existing text.\n\
 If non-nil and not `overwrite-mode-binary', self-insertion still\n\
 inserts at the end of a line, and inserts when point is before a tab,\n\
-unless that tab is displaying as only one space.\n\
+until the tab is filled in.\n\
 If `overwrite-mode-binary', self-insertion replaces newlines and tabs too.\n\
 Automatically becomes buffer-local when set in any fashion.");