diff --git a/tools/syntax-highlighting/syntaxes/nub.tmLanguage.json b/tools/syntax-highlighting/syntaxes/nub.tmLanguage.json
index ff66384..3d75d00 100644
--- a/tools/syntax-highlighting/syntaxes/nub.tmLanguage.json
+++ b/tools/syntax-highlighting/syntaxes/nub.tmLanguage.json
@@ -68,7 +68,7 @@
       "patterns": [
         {
           "name": "storage.modifier.nub",
-          "match": "\\b(export|extern)\\b"
+          "match": "\\b(export|extern|calls)\\b"
         }
       ]
     },
@@ -76,7 +76,7 @@
       "patterns": [
         {
           "name": "storage.type.primitive.nub",
-          "match": "\\b(i8|i16|i32|i64|u8|u16|u32|u64|f32|f64|bool|string|any)\\b"
+          "match": "\\b(i8|i16|i32|i64|u8|u16|u32|u64|f32|f64|bool|void|any)\\b"
         },
         {
           "name": "storage.type.array.nub",