diff --git a/rclcpp/include/rclcpp/executor.hpp b/rclcpp/include/rclcpp/executor.hpp
index d72b549..1e6bd95 100644
--- a/rclcpp/include/rclcpp/executor.hpp
+++ b/rclcpp/include/rclcpp/executor.hpp
@@ -180,7 +180,7 @@ public:
     return FutureReturnCode::INTERRUPTED;
   }
 
-  /// Cancels any running spin* function, causing it to return.
+  /// Cancel any running spin* function, causing it to return.
   /* This function can be called asynchonously from any thread. */
   RCLCPP_PUBLIC
   void