diff --git a/doc/source/firmware/safety/stack-checking.rst b/doc/source/firmware/safety/stack-checking.rst
index f975d31..7b16a72 100644
--- a/doc/source/firmware/safety/stack-checking.rst
+++ b/doc/source/firmware/safety/stack-checking.rst
@@ -34,6 +34,6 @@ On each run of the safety controller's handling function (:c:func:`safety_contro
 .. doxygenfunction:: stack_check_corruption_detect_area
 
 
-This function constantly checks the memory area for write modifications, and therefore detects, if the stack or heap have grown outside their boundaries.
+This function checks the memory area for write modifications, and therefore detects, if the stack or heap have grown outside their boundaries. This canary approach does, however, not guarantee a full protection against heap or stack overflows.