diff --git a/mozilla/gfx/thebes/crashtests/429899-1.html b/mozilla/gfx/thebes/crashtests/429899-1.html
new file mode 100644
index 00000000000..11cccd6862d
--- /dev/null
+++ b/mozilla/gfx/thebes/crashtests/429899-1.html
@@ -0,0 +1 @@
+ᄄ똬
\ No newline at end of file
diff --git a/mozilla/gfx/thebes/crashtests/crashtests.list b/mozilla/gfx/thebes/crashtests/crashtests.list
index 9cb78e49536..7b7a789f6a9 100644
--- a/mozilla/gfx/thebes/crashtests/crashtests.list
+++ b/mozilla/gfx/thebes/crashtests/crashtests.list
@@ -37,4 +37,5 @@ load 420962-1.html
load 421393-1.html
load 421813-1.html
load 423270-1.html
+load 429899-1.html