diff --git a/test/c/std/gif.c b/test/c/std/gif.c
index d3cbbc9..ddbdc83 100644
--- a/test/c/std/gif.c
+++ b/test/c/std/gif.c
@@ -1598,8 +1598,8 @@
   wuffs_base__io_buffer src = ((wuffs_base__io_buffer){
       .data = g_src_slice_u8,
   });
-  CHECK_STRING(
-      read_file(&src, "test/data/artificial-gif/pixel-data-too-much.gif"));
+  CHECK_STRING(read_file(
+      &src, "test/data/artificial-gif/pixel-data-too-much-good-lzw.gif"));
 
   return do_test_wuffs_gif_decode_expecting(
       src, 0, wuffs_base__error__too_much_data, false);
@@ -1611,8 +1611,8 @@
   wuffs_base__io_buffer src = ((wuffs_base__io_buffer){
       .data = g_src_slice_u8,
   });
-  CHECK_STRING(
-      read_file(&src, "test/data/artificial-gif/pixel-data-too-much.gif"));
+  CHECK_STRING(read_file(
+      &src, "test/data/artificial-gif/pixel-data-too-much-good-lzw.gif"));
 
   return do_test_wuffs_gif_decode_expecting(
       src, WUFFS_GIF__QUIRK_IGNORE_TOO_MUCH_PIXEL_DATA, NULL, false);
diff --git a/test/data/artificial-gif/pixel-data-too-much.gif b/test/data/artificial-gif/pixel-data-too-much-good-lzw.gif
similarity index 100%
rename from test/data/artificial-gif/pixel-data-too-much.gif
rename to test/data/artificial-gif/pixel-data-too-much-good-lzw.gif
Binary files differ
diff --git a/test/data/artificial-gif/pixel-data-too-much.gif.make-artificial.txt b/test/data/artificial-gif/pixel-data-too-much-good-lzw.gif.make-artificial.txt
similarity index 100%
rename from test/data/artificial-gif/pixel-data-too-much.gif.make-artificial.txt
rename to test/data/artificial-gif/pixel-data-too-much-good-lzw.gif.make-artificial.txt
diff --git a/test/nia-checksums-of-data.txt b/test/nia-checksums-of-data.txt
index 8928559..5c65b37 100644
--- a/test/nia-checksums-of-data.txt
+++ b/test/nia-checksums-of-data.txt
@@ -16,7 +16,7 @@
 76c44866 test/data/artificial-gif/no-frames.gif
 6ec818c3 test/data/artificial-gif/pixel-data-none.gif
 5e57adb2 test/data/artificial-gif/pixel-data-not-enough.gif
-3e29f88a test/data/artificial-gif/pixel-data-too-much.gif
+3e29f88a test/data/artificial-gif/pixel-data-too-much-good-lzw.gif
 f50d1d50 test/data/artificial-gif/small-frame-interlaced.gif
 beaec397 test/data/artificial-gif/transparent-index.gif
 6ec818c3 test/data/artificial-gif/zero-width-frame.gif