diff --git a/Workflow-management.md b/Workflow-management.md
index 0a9811f..415ae5c 100644
--- a/Workflow-management.md
+++ b/Workflow-management.md
@@ -175,6 +175,8 @@ shortcomings could be solved with a strong knowledge of Make).
 For reference, here is a `Makefile` defining the same rules as the Snakemake example above.
 
 ```makefile
+.DELETE_ON_ERROR: # forces make to remove targets of failed rules
+
 # One input, one output
 groups_with_users.txt: /etc/group
         cat $< | awk -F ':' '$$4 != "" { print $$1,$$4; }' > $@