diff --git a/CppCoreGuidelines.md b/CppCoreGuidelines.md
index ed95ba2..618978f 100644
--- a/CppCoreGuidelines.md
+++ b/CppCoreGuidelines.md
@@ -13990,7 +13990,7 @@ Application concepts are easier to reason about.
 ##### Example
 
     void some_fun() {
-        std::string  msg, msg2;
+        std::string msg, msg2;
         std::thread publisher([&] { msg = "Hello"; });       // bad: less expressive
                                                              //      and more error-prone
         auto pubtask = std::async([&] { msg2 = "Hello"; });  // OK