diff --git a/src/bin/pg_test_fsync/Makefile b/src/bin/pg_test_fsync/Makefile
index c4f9ae06648..631d0f38a8e 100644
--- a/src/bin/pg_test_fsync/Makefile
+++ b/src/bin/pg_test_fsync/Makefile
@@ -33,3 +33,4 @@ uninstall:
 
 clean distclean maintainer-clean:
 	rm -f pg_test_fsync$(X) $(OBJS)
+	rm -rf tmp_check
diff --git a/src/bin/pg_test_timing/Makefile b/src/bin/pg_test_timing/Makefile
index 52994b4103c..84d84c38aa8 100644
--- a/src/bin/pg_test_timing/Makefile
+++ b/src/bin/pg_test_timing/Makefile
@@ -33,3 +33,4 @@ uninstall:
 
 clean distclean maintainer-clean:
 	rm -f pg_test_timing$(X) $(OBJS)
+	rm -rf tmp_check