diff --git a/CppCoreGuidelines.md b/CppCoreGuidelines.md
index 38c7fa3..64026c7 100644
--- a/CppCoreGuidelines.md
+++ b/CppCoreGuidelines.md
@@ -9080,7 +9080,7 @@ Flag `const_cast`s.
 
 ##### Reason
 
-Constructs that cannot overflow, don't, and usually runs faster:
+Constructs that cannot overflow, don't, and usually run faster:
 
 ##### Example