diff --git a/jtag/src/svf/Makefile.am b/jtag/src/svf/Makefile.am
index d12d17c4..2f84abf1 100644
--- a/jtag/src/svf/Makefile.am
+++ b/jtag/src/svf/Makefile.am
@@ -36,7 +36,7 @@ libsvf_a_SOURCES = \
 	svf.h \
 	svf.c
 
-CLEANFILES = \
+MAINTAINERCLEANFILES = \
 	svf_bison.c \
 	svf_bison.h \
 	svf_flex.c