diff --git a/tests/Makefile.am b/tests/Makefile.am
index b357386f814fccc65e461f251eb3cc5578c1fd38..bf970033888f85fe6b41a2d519f8cf40e519486d 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -185,6 +185,8 @@ MODFILES = \
 	external_function/no_deriv_given.mod \
 	external_function/no_deriv_given_dll.mod \
 	seeds.mod \
+	minimal_state_space_system/as2007_minimal.mod \
+	minimal_state_space_system/sw_minimal.mod \
 	identification/kim/kim2.mod \
 	identification/as2007/as2007.mod \
 	identification/as2007/as2007_kronflags.mod \
diff --git a/tests/minimal state space system/as2007_minimal.mod b/tests/minimal_state_space_system/as2007_minimal.mod
similarity index 100%
rename from tests/minimal state space system/as2007_minimal.mod
rename to tests/minimal_state_space_system/as2007_minimal.mod
diff --git a/tests/minimal state space system/sw_minimal.mod b/tests/minimal_state_space_system/sw_minimal.mod
similarity index 100%
rename from tests/minimal state space system/sw_minimal.mod
rename to tests/minimal_state_space_system/sw_minimal.mod