1 files changed, 2 insertions, 2 deletions

diff --git a/doc/lispref/display.texi b/doc/lispref/display.texi
index a97aabe9dff..a2ed4b38913 100644
--- a/doc/lispref/display.texi
+++ b/doc/lispref/display.texi
@@ -5909,8 +5909,8 @@ This function returns the size of an image as a pair
 specification.  @var{pixels} non-@code{nil} means return sizes measured
 in pixels, otherwise return sizes measured in the default character size
 of @var{frame} (@pxref{Frame Font}).  @var{frame} is the frame on which
-the image will be displayed.  @var{frame} null or omitted means use the
-selected frame (@pxref{Input Focus}).
+the image will be displayed.  @var{frame} @code{nil} or omitted means
+use the selected frame (@pxref{Input Focus}).
 @end defun
 
 @defvar max-image-size