diff --git a/runtime/syntax/c.yaml b/runtime/syntax/c.yaml
index 3c653d18..bdcbef5e 100644
--- a/runtime/syntax/c.yaml
+++ b/runtime/syntax/c.yaml
@@ -4,13 +4,12 @@ detect:
     filename: "(\\.(c|C)$|\\.(h|H)$|\\.ii?$|\\.(def)$)"
 
 rules:
-    - identifier: "\\b[A-Z_][0-9A-Z_]+\\b" 
+    - identifier: "\\b[A-Z_][0-9A-Z_]+\\b"
     - type: "\\b(float|double|char|int|short|long|sizeof|enum|void|static|const|struct|union|typedef|extern|(un)?signed|inline)\\b"
     - type: "\\b((s?size)|((u_?)?int(8|16|32|64|ptr)))_t\\b"
     - type.extended: "\\b(bool)\\b"
-    - statement: "\\b(typename|mutable|volatile|register|explicit)\\b"
+    - statement: "\\b(volatile|register)\\b"
     - statement: "\\b(for|if|while|do|else|case|default|switch)\\b"
-    - statement: "\\b(try|throw|catch|operator|delete)\\b"
     - statement: "\\b(goto|continue|break|return)\\b"
     - preproc: "^[[:space:]]*#[[:space:]]*(define|pragma|include|(un|ifn?)def|endif|el(if|se)|if|warning|error)"
     - constant: "'([^'\\\\]|(\\\\[\"'abfnrtv\\\\]))'"
@@ -20,7 +19,7 @@ rules:
     - statement: "__attribute__[[:space:]]*\\(\\([^)]*\\)\\)"
     - statement: "__(aligned|asm|builtin|hidden|inline|packed|restrict|section|typeof|weak)__"
       # Operator Color
-    - symbol.operator: "([.:;,+*|=!\\%]|<|>|/|-|&)" 
+    - symbol.operator: "([.:;,+*|=!\\%]|<|>|/|-|&)"
     - symbol.brackets: "[(){}]|\\[|\\]"
     - constant.number: "(\\b[0-9]+\\b|\\b0x[0-9A-Fa-f]+\\b)"
     - constant.number: "NULL"
@@ -51,4 +50,3 @@ rules:
         end: "\\*/"
         rules:
             - todo: "(TODO|XXX|FIXME):?"
-