diff --git a/src/bonsai/Makefile b/src/bonsai/Makefile
index 6b4704b7b3..38fbc61355 100644
--- a/src/bonsai/Makefile
+++ b/src/bonsai/Makefile
@@ -371,7 +371,7 @@ test-tool:
 ifndef MODULE
 	pytest test/tool
 else
-	pytest test/tool/test_$(MODULE).py
+	pytest test/tool/test_$(MODULE).py --maxfail=1
 endif
 
 # Reregistering test is not added to the standard test suite because during unregister