diff --git a/tests/css/parser/Makefile.am b/tests/css/parser/Makefile.am
index eed1dedfe6..1108f1b15e 100644
--- a/tests/css/parser/Makefile.am
+++ b/tests/css/parser/Makefile.am
@@ -5,19 +5,26 @@ TEST_PROGS += test-css-parser
 check_PROGRAMS = $(TEST_PROGS)
 
 test_css_parser_CFLAGS = \
-       -I$(top_srcdir)                 \
-       -I$(top_builddir)/gdk           \
-       -I$(top_srcdir)/gdk             \
-       -DGDK_DISABLE_DEPRECATED        \
-       -DGTK_DISABLE_DEPRECATED        \
-       $(GTK_DEBUG_FLAGS)              \
-       $(GTK_DEP_CFLAGS)
+       	-I$(top_srcdir)                 \
+       	-I$(top_builddir)/gdk           \
+       	-I$(top_srcdir)/gdk             \
+       	-DGDK_DISABLE_DEPRECATED        \
+       	-DGTK_DISABLE_DEPRECATED        \
+       	$(GTK_DEBUG_FLAGS)              \
+       	$(GTK_DEP_CFLAGS)
 
 test_css_parser_LDADD = \
-       $(top_builddir)/gdk/libgdk-3.la \
-       $(top_builddir)/gtk/libgtk-3.la \
-       $(GTK_DEP_LIBS)
+       	$(top_builddir)/gdk/libgdk-3.la \
+      	$(top_builddir)/gtk/libgtk-3.la \
+	$(GTK_DEP_LIBS)
 
 test_css_parser_SOURCES = \
-       test-css-parser.c
+	test-css-parser.c
 
+clean-local:
+	rm $(builddir)/*.out.css || true
+
+EXTRA_DIST += \
+	does-not-exist.css \
+	does-not-exist.ref.css \
+	simple.css