diff --git a/docs/UsersManual.rst b/docs/UsersManual.rst
index ea613d1..281cc20 100644
--- a/docs/UsersManual.rst
+++ b/docs/UsersManual.rst
@@ -828,7 +828,7 @@
 Clang provides a number of ways to control code generation. The options
 are listed below.
 
-**-fsanitize=check1,check2**
+**-fsanitize=check1,check2,...**
    Turn on runtime checks for various forms of undefined or suspicious
    behavior.