diff --git a/tools/scripts/lint.py b/tools/scripts/lint.py
index 5643a88..9bd054f 100644
--- a/tools/scripts/lint.py
+++ b/tools/scripts/lint.py
@@ -32,14 +32,20 @@ def lint_csharp(filename):
       if len(line) > MAX_LINE_LENGTH:
         if not re.match(r'\s*// https?:', line):
           emit_error(filename, line_num, 'line too long')
+      if re.match(r'\s*//\S', line):
+        emit_error(filename, line_num, 'no space between // and comment')
+      match = re.match(r'\s*const.* (\w+) =', line)
+      if match:
+        identifier = match.group(1)
+        if not re.fullmatch(r'[A-Z_]+', identifier):
+          emit_error(filename, line_num,
+              'const field %s should be in ALL_CAPS' % identifier)
       if re.search(r'\t', line):
         emit_error(filename, line_num, 'illegal \\t character')
       if re.search(r'\r', line):
         emit_error(filename, line_num, 'illegal \\r character')
       if re.search(r'\s+$', line):
         emit_error(filename, line_num, 'trailing whitespace')
-      if re.match(r'\s*//\S', line):
-        emit_error(filename, line_num, 'no space between // and comment')
 
 
 def main(args):