3 files changed, 3 insertions, 3 deletions

diff --git a/src/buffer.c b/src/buffer.c
index 8cb28d8aa70..80eaa971a3a 100644
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -383,7 +383,7 @@ nsberror (Lisp_Object spec)
 }
 
 DEFUN ("buffer-live-p", Fbuffer_live_p, Sbuffer_live_p, 1, 1, 0,
-       doc: /* Return non-nil if OBJECT is a buffer which has not been killed.
+       doc: /* Return t if OBJECT is a buffer which has not been killed.
 Value is nil if OBJECT is not a buffer or if it has been killed.  */)
   (Lisp_Object object)
 {
diff --git a/src/image.c b/src/image.c
index 7cf1bc4c362..08e420837a0 100644
--- a/src/image.c
+++ b/src/image.c
@@ -10053,7 +10053,7 @@ The list of capabilities can include one or more of the following:
 
 DEFUN ("init-image-library", Finit_image_library, Sinit_image_library, 1, 1, 0,
        doc: /* Initialize image library implementing image type TYPE.
-Return non-nil if TYPE is a supported image type.
+Return t if TYPE is a supported image type.
 
 If image libraries are loaded dynamically (currently only the case on
 MS-Windows), load the library for TYPE if it is not yet loaded, using
diff --git a/src/window.c b/src/window.c
index 1e6e148bf48..e4bb2daeb38 100644
--- a/src/window.c
+++ b/src/window.c
@@ -384,7 +384,7 @@ If FRAME is omitted or nil, it defaults to the selected frame.  */)
 
 DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p,
        Swindow_minibuffer_p, 0, 1, 0,
-       doc: /* Return non-nil if WINDOW is a minibuffer window.
+       doc: /* Return t if WINDOW is a minibuffer window.
 WINDOW must be a valid window and defaults to the selected one.  */)
   (Lisp_Object window)
 {