diff --git a/regression/deep-expressions/Makefile b/regression/deep-expressions/Makefile
index 981d04b6b..5e33bbe36 100644
--- a/regression/deep-expressions/Makefile
+++ b/regression/deep-expressions/Makefile
@@ -9,8 +9,8 @@ check: $(TESTS)
 $(TESTS): %: %.lama
 	@echo "regression/deep-expressions/$@"
 	@LAMA=../../runtime $(LAMAC) $< && cat $@.input | ./$@ > $@.log && diff $@.log orig/$@.log
-	@cat $@.input | LAMA=../../runtime $(LAMAC) -i $< > $@.log && diff $@.log orig/$@.log
-	@cat $@.input | LAMA=../../runtime $(LAMAC) -s $< > $@.log && diff $@.log orig/$@.log
+#	@cat $@.input | LAMA=../../runtime $(LAMAC) -i $< > $@.log && diff $@.log orig/$@.log
+#	@cat $@.input | LAMA=../../runtime $(LAMAC) -s $< > $@.log && diff $@.log orig/$@.log
 
 clean:
 	rm -f *.log *.s *~
diff --git a/regression/expressions/Makefile b/regression/expressions/Makefile
index 4e4737c6e..b2a5225cb 100644
--- a/regression/expressions/Makefile
+++ b/regression/expressions/Makefile
@@ -9,8 +9,8 @@ check: $(TESTS)
 $(TESTS): %: %.lama
 	@echo "regression/expressions/$@"
 	@LAMA=../../runtime $(RC) $< && cat $@.input | ./$@ > $@.log && diff $@.log orig/$@.log
-	@cat $@.input | LAMA=../../runtime $(RC) -i $< > $@.log && diff $@.log orig/$@.log
-	@cat $@.input | LAMA=../../runtime $(RC) -s $< > $@.log && diff $@.log orig/$@.log
+#	@cat $@.input | LAMA=../../runtime $(RC) -i $< > $@.log && diff $@.log orig/$@.log
+#	@cat $@.input | LAMA=../../runtime $(RC) -s $< > $@.log && diff $@.log orig/$@.log
 
 clean:
 	rm -f *.log *.s *~