diff --git a/testsuite/a11y/Makefile.am b/testsuite/a11y/Makefile.am
index 84a14d2953..01e96e8554 100644
--- a/testsuite/a11y/Makefile.am
+++ b/testsuite/a11y/Makefile.am
@@ -106,6 +106,8 @@ test_files = $(test_in_files:.test.in=.test)
 $(test_files): %.test: %.test.in
 	$(AM_V_GEN) sed $(substitutions) $< > $@.tmp && mv $@.tmp $@
 
+DISTCLEANFILES = $(test_files)
+
 testmetadir = $(datadir)/installed-tests/$(PACKAGE)
 testmeta_DATA = $(test_files)
 endif
diff --git a/testsuite/css/Makefile.am b/testsuite/css/Makefile.am
index d1cda52987..e88e12d48b 100644
--- a/testsuite/css/Makefile.am
+++ b/testsuite/css/Makefile.am
@@ -40,6 +40,8 @@ test_files = $(test_in_files:.test.in=.test)
 $(test_files): %.test: %.test.in
 	$(AM_V_GEN) sed $(substitutions) $< > $@.tmp && mv $@.tmp $@
 
+DISTCLEANFILES = $(test_files)
+
 testmetadir = $(datadir)/installed-tests/$(PACKAGE)/css
 testmeta_DATA = $(test_files)
 endif
diff --git a/testsuite/gdk/Makefile.am b/testsuite/gdk/Makefile.am
index e8c5fa52e8..0f5f960ba6 100644
--- a/testsuite/gdk/Makefile.am
+++ b/testsuite/gdk/Makefile.am
@@ -41,6 +41,8 @@ insttest_PROGRAMS = $(TEST_PROGS)
 
 test_files = $(TEST_PROGRS:=.test)
 
+DISTCLEANFILES = $(test_files)
+
 testmetadir = $(datadir)/installed-tests/$(PACKAGE)
 testmeta_DATA = $(test_files)
 endif
diff --git a/testsuite/gtk/Makefile.am b/testsuite/gtk/Makefile.am
index 7228a36eeb..55eebeee67 100644
--- a/testsuite/gtk/Makefile.am
+++ b/testsuite/gtk/Makefile.am
@@ -139,6 +139,8 @@ insttest_PROGRAMS = $(TEST_PROGS)
 
 test_files = $(TEST_PROGS:=.test)
 
+DISTCLEANFILES = $(test_files)
+
 testmetadir = $(datadir)/installed-tests/$(PACKAGE)
 testmeta_DATA = $(test_files)
 endif
diff --git a/testsuite/reftests/Makefile.am b/testsuite/reftests/Makefile.am
index 11a86f185b..9ece29d94a 100644
--- a/testsuite/reftests/Makefile.am
+++ b/testsuite/reftests/Makefile.am
@@ -303,8 +303,10 @@ substitutions = \
 reftests.test: reftests.test.in Makefile
 	$(AM_V_GEN) sed $(substitutions) $< > $@.tmp && mv $@.tmp $@
 
+DISTCLEANFILES = reftests.test
+
 testmetadir = $(datadir)/installed-tests/$(PACKAGE)
 testmeta_DATA = reftests.test
 endif
- 
+
 -include $(top_srcdir)/git.mk