1 files changed, 1 insertions, 1 deletions

diff --git a/src/image.c b/src/image.c
index befddefe99b..0045770ac55 100644
--- a/src/image.c
+++ b/src/image.c
@@ -7937,7 +7937,7 @@ static struct image_keyword gif_format[GIF_LAST] =
   {":conversion",       IMAGE_DONT_CHECK_VALUE_TYPE,            0},
   {":heuristic-mask",   IMAGE_DONT_CHECK_VALUE_TYPE,            0},
   {":mask",             IMAGE_DONT_CHECK_VALUE_TYPE,            0},
-  {":image",            IMAGE_NON_NEGATIVE_INTEGER_VALUE,       0},
+  {":index",            IMAGE_NON_NEGATIVE_INTEGER_VALUE,       0},
   {":background",       IMAGE_STRING_OR_NIL_VALUE,              0}
 };