diff --git a/docs/grammars/grammar-tact.json b/docs/grammars/grammar-tact.json
index f04339ce1..56c75b05c 100644
--- a/docs/grammars/grammar-tact.json
+++ b/docs/grammars/grammar-tact.json
@@ -1,12 +1,9 @@
 {
   "name": "tact",
-  "displayName": "Tact",
   "scopeName": "source.tact",
   "fileTypes": [
     "tact"
   ],
-  "foldingStartMarker": "\\{\\s*$",
-  "foldingStopMarker": "^\\s*\\}",
   "patterns": [
     {
       "include": "#comment"
@@ -84,7 +81,7 @@
     },
 
     "todo": {
-      "match": "(?i)\\b(FIXME|TODO|CHANGED|XXX|IDEA|HACK|NOTE|REVIEW|NB|BUG)\\b(?-i)",
+      "match": "\\b(FIXME|TODO|CHANGED|XXX|IDEA|HACK|NOTE|REVIEW|NB|BUG)\\b",
       "name": "keyword.comment.todo.tact"
     },
 
@@ -143,7 +140,7 @@
           "begin": "(?<!\\.)(asm)\\s*(\\()",
           "beginCaptures": {
             "1": {
-              "name": "entity.other.attribute-name.tact"
+              "name": "keyword.other.asm.tact"
             },
             "2": {
               "name": "punctuation.brackets.round.tact"
@@ -177,8 +174,13 @@
         },
         {
           "comment": "Fallback match",
-          "match": "(?<!\\.)\\b(@name|@interface|asm)\\b",
+          "match": "(?<!\\.)\\b(@name|@interface)\\b",
           "name": "entity.other.attribute-name.tact"
+        },
+        {
+          "comment": "Fallback match",
+          "match": "(?<!\\.)\\b(asm)\\b",
+          "name": "keyword.other.asm.tact"
         }
       ]
     },
@@ -402,7 +404,7 @@
         "comment": "Serialization",
         "patterns": [
           {
-            "match": "(?<!\\.)\\b(as)\\s+(coins|varu?int(?:32|16)|remaining|bytes(?:64|32)|int257|u?int(?:2[0-5][0-6]|1[0-9][0-9]|[1-9][0-9]?))\\b",
+            "match": "(?<!\\.)\\b(as)\\s+(coins|varu?int(?:32|16)|remaining|bytes(?:32|64)|int257|u?int(?:25[0-6]|2[0-4][0-9]|1[0-9][0-9]|[1-9][0-9]?))\\b",
             "captures": {
               "1": {
                 "name": "keyword.other.as.tact storage.modifier.tact"