diff --git a/lib/ace/mode/_test/tokens_diff.json b/lib/ace/mode/_test/tokens_diff.json
index 6063991e..7cf9b728 100644
--- a/lib/ace/mode/_test/tokens_diff.json
+++ b/lib/ace/mode/_test/tokens_diff.json
@@ -54,7 +54,7 @@
    "start"
 ],[
    "start",
-  ["invalid"," "]
+  ["text"," "]
 ],[
    "start"
 ],[
@@ -87,7 +87,7 @@
    "start"
 ],[
    "start",
-  ["invalid"," "]
+  ["text"," "]
 ],[
    "start"
 ],[
@@ -195,7 +195,7 @@
    "start"
 ],[
    "start",
-  ["invalid"," "]
+  ["text"," "]
 ],[
    "start"
 ],[
@@ -265,7 +265,7 @@
    "start"
 ],[
    "start",
-  ["invalid"," "]
+  ["text"," "]
 ],[
    "start"
 ],[
@@ -298,7 +298,7 @@
    "start"
 ],[
    "start",
-  ["invalid"," "]
+  ["text"," "]
 ],[
    "start"
 ],[
diff --git a/lib/ace/mode/_test/tokens_lsl.json b/lib/ace/mode/_test/tokens_lsl.json
index 1e30c7c6..83b7352b 100644
--- a/lib/ace/mode/_test/tokens_lsl.json
+++ b/lib/ace/mode/_test/tokens_lsl.json
@@ -492,4 +492,4 @@
   ["paren.rparen.lsl","}"]
 ],[
    "start"
-]]
+]]
\ No newline at end of file
diff --git a/lib/ace/mode/diff_highlight_rules.js b/lib/ace/mode/diff_highlight_rules.js
index 609d4f0f..89963972 100644
--- a/lib/ace/mode/diff_highlight_rules.js
+++ b/lib/ace/mode/diff_highlight_rules.js
@@ -88,6 +88,9 @@ var DiffHighlightRules = function() {
             }, {
                 regex: "^Index.+$",
                 token: "variable"
+            }, {
+                regex: "^\\s+$",
+                token: "text"
             }, {
                 regex: "\\s*$",
                 token: "invalid"