diff --git a/queries/c_sharp/highlights.scm b/queries/c_sharp/highlights.scm
index 993609485..e2dc3720c 100644
--- a/queries/c_sharp/highlights.scm
+++ b/queries/c_sharp/highlights.scm
@@ -298,6 +298,8 @@
  ":"
 ] @punctuation.delimiter
 
+(conditional_expression ["?" ":"] @conditional.ternary)
+
 [
  "["
  "]"