diff --git a/CppCoreGuidelines.md b/CppCoreGuidelines.md
index 179718c..08c5cb3 100644
--- a/CppCoreGuidelines.md
+++ b/CppCoreGuidelines.md
@@ -12889,7 +12889,7 @@ whereas `if (p != nullptr)` would be a long-winded workaround.
 
 This rule is especially useful when a declaration is used as a condition
 
-    if (auto pc = dynamic_cast<Circle>(ps)) { ... } // execute is ps points to a kind of Circle, good
+    if (auto pc = dynamic_cast<Circle>(ps)) { ... } // execute if ps points to a kind of Circle, good
 
     if (auto pc = dynamic_cast<Circle>(ps); pc != nullptr) { ... } // not recommended