diff --git a/lib/ace/mode/_test/tokens_tex.json b/lib/ace/mode/_test/tokens_tex.json
index 2d023676716..a7bdc1779f9 100644
--- a/lib/ace/mode/_test/tokens_tex.json
+++ b/lib/ace/mode/_test/tokens_tex.json
@@ -77,9 +77,8 @@
 ],[
    "start",
   ["text"," x="],
-  ["keyword","\\left\\"],
-  ["paren.keyword.operator","{"],
-  ["text"," "],
+  ["keyword","\\left"],
+  ["text", "\\{ "],
   ["keyword","\\begin"],
   ["paren.keyword.operator","{"],
   ["nospell.text","array"],
@@ -127,4 +126,4 @@
   ["paren.keyword.operator","{"],
   ["nospell.text","equation"],
   ["paren.keyword.operator","}"]
-]]
\ No newline at end of file
+]]