diff --git a/lib/asn1/Makefile.am b/lib/asn1/Makefile.am
index 9332ebdf4..39425e88f 100644
--- a/lib/asn1/Makefile.am
+++ b/lib/asn1/Makefile.am
@@ -12,6 +12,8 @@ asn1_compile_SOURCES = parse.y lex.l main.c hash.c symbol.c gen.c
 
 asn1_compile_LDADD = @LEXLIB@
 
+CLEANFILES = lex.c parse.c parse.h asn1.h `cat asn1_files` asn1_files
+
 parse.c: parse.y
 	$(YACC) -d $(YFLAGS) $(srcdir)/parse.y
 	mv y.tab.c parse.c
@@ -27,7 +29,7 @@ lex.o: parse.h
 libasn1.a: asn1_compile $(libasn1_a_OBJECTS) $(libasn1_a_DEPENDENCIES)
 	./asn1_compile $(srcdir)/k5.asn1
 	o=`sed -e 's/\.c/.o/g' asn1_files`; \
-	$(MAKE) $$o;\
+	$(MAKE) $$o; \
 	rm -f libasn1.a; \
 	$(AR) cru libasn1.a $(libasn1_a_OBJECTS) $(libasn1_a_LIBADD) $$o; \
 	$(RANLIB) libasn1.a