diff --git a/controller_manager/src/controller_manager.cpp b/controller_manager/src/controller_manager.cpp
index 2e703f4219..e1cf41f7e4 100644
--- a/controller_manager/src/controller_manager.cpp
+++ b/controller_manager/src/controller_manager.cpp
@@ -948,7 +948,7 @@ controller_interface::return_type ControllerManager::switch_controller(
     {
       RCLCPP_WARN(
         get_logger(),
-        "Controller with name '%s' is not inactive so its following"
+        "Controller with name '%s' is not inactive so its following "
         "controllers do not have to be checked, because it cannot be activated.",
         controller_it->info.name.c_str());
       status = controller_interface::return_type::ERROR;