diff --git a/llvm/docs/LangRef.rst b/llvm/docs/LangRef.rst
index 98654f3cc31c..f961188af7a4 100644
--- a/llvm/docs/LangRef.rst
+++ b/llvm/docs/LangRef.rst
@@ -6310,7 +6310,7 @@ Syntax:
 
 ::
 
-      declare void %llvm.va_start(i8* <arglist>)
+      declare void @llvm.va_start(i8* <arglist>)
 
 Overview:
 """""""""