diff --git a/include/rcutils/env.h b/include/rcutils/env.h
index 154aa666..f6471daa 100644
--- a/include/rcutils/env.h
+++ b/include/rcutils/env.h
@@ -74,7 +74,7 @@ rcutils_set_env(const char * env_name, const char * env_value);
  * \param[in] env_name Name of the environment variable to modify.
  * \param[in] env_value Value to set the environment variable to, or `NULL` to
  *   un-set.
- * \param[in] overwrite If true, the environemnt variable value will not be overwritten
+ * \param[in] overwrite If false, the environment variable value will not be overwritten
  *   if previously set.
  * \return `true` if success, or
  * \return `false` if env_name is invalid or NULL, or