diff --git a/Makefile.in b/Makefile.in
index a6264aaa3..41eaaf5bf 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -20,7 +20,7 @@ clean:
 distclean: clean
 	rm -f config.log config.status
 	rm -rf autom4te.cache
-	rm -f Makefile preprocessor/Makefile doc/Makefile doc/preprocessor/Makefile doc/macroprocessor/Makefile doc/userguide/Makefile matlab/dynare_version.m windows/dynare-version.nsi
+	rm -f Makefile preprocessor/Makefile doc/Makefile doc/preprocessor/Makefile doc/macroprocessor/Makefile doc/userguide/Makefile tests/Makefile matlab/dynare_version.m windows/dynare-version.nsi
 .PHONY: distclean
 
 TARBASENAME=@PACKAGE_NAME@-@PACKAGE_VERSION@
diff --git a/tests/Makefile.in b/tests/Makefile.in
index 9738247c1..1e1800752 100644
--- a/tests/Makefile.in
+++ b/tests/Makefile.in
@@ -47,6 +47,7 @@ clean:
 	# Files generated by the preprocessor
 	rm -f $(patsubst %.mod, %.m, $(MODS)) \
 		$(patsubst %.mod, %_static.m, $(MODS)) \
+		$(patsubst %.mod, %_objective_static.m, $(MODS)) \
 		$(patsubst %.mod, %_dynamic.m, $(MODS))
 
 	# Results