diff --git a/sys/include/string_utils.h b/sys/include/string_utils.h
index 5c7da82a8d..b04a148ec9 100644
--- a/sys/include/string_utils.h
+++ b/sys/include/string_utils.h
@@ -7,8 +7,7 @@
  */
 
 /**
- * @defgroup    sys_string_utils    Utility functions that are missing in
- *                                  `string.h`
+ * @defgroup    sys_string_utils    Utility functions that are missing in `string.h`
  * @ingroup     sys
  *
  * This header provides utility functions that the standard C libs `string.h`