diff --git a/parser/Makefile b/parser/Makefile
index 1613aa7ed..28180fa2b 100644
--- a/parser/Makefile
+++ b/parser/Makefile
@@ -309,6 +309,7 @@ clean: _clean
 	-rm -rf techdoc.{aux,log,pdf,toc,txt} techdoc/
 	make -s -C $(PCREDIR) clean
 	make -s -C $(AAREDIR) clean
+	make -s -C tst clean
 	make -s -C po clean
 
 .SILENT: dist_clean
diff --git a/parser/tst/Makefile b/parser/tst/Makefile
index ceab642ea..ec840d40e 100644
--- a/parser/tst/Makefile
+++ b/parser/tst/Makefile
@@ -39,4 +39,4 @@ $(PARSER):
 	make -C $(PARSER_DIR) $(PARSER_BIN)
 
 clean:
-	rm -f simple_tests/generated_x/*
+	rm -f simple_tests/generated_x/*.sd