diff --git a/system theoretic process analysis.md b/system theoretic process analysis.md
index 2b7ff9985..d10d7a377 100644
--- a/system theoretic process analysis.md	
+++ b/system theoretic process analysis.md	
@@ -9,5 +9,5 @@
 		- continue by defining the scope of the system
 		- find [[hazards]], which are systemic states or conditions to be prevented, and which together with (worst-case) environmental conditions lead to [[losses]].
 			- [[hazards]] + [[environmental conditions]] -> [[losses]]
-		- find [[]]
+		- find [[system level constraints]]. they tend to look like [[hazards]], inverted.
 	- can be applied recursively
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