diff --git a/queries/c/highlights.scm b/queries/c/highlights.scm
index b3889dbd8..4bb3ff745 100644
--- a/queries/c/highlights.scm
+++ b/queries/c/highlights.scm
@@ -51,6 +51,7 @@
 ">=" @operator
 "!" @operator
 "||" @operator
+"?" @operator
 
 "-=" @operator
 "+=" @operator