diff --git a/backend/Makefile.am b/backend/Makefile.am
index cfa63b1bd..b67249009 100644
--- a/backend/Makefile.am
+++ b/backend/Makefile.am
@@ -700,12 +700,12 @@ libsane_ma1509_la_LIBADD = $(COMMON_LIBS) libma1509.la ../sanei/sanei_init_debug
 EXTRA_DIST += ma1509.conf.in
 
 libmagicolor_la_SOURCES = magicolor.c magicolor.h
-libmagicolor_la_CPPFLAGS = $(AM_CPPFLAGS) -DBACKEND_NAME=magicolor
+libmagicolor_la_CPPFLAGS = $(AM_CPPFLAGS) -DBACKEND_NAME=magicolor $(SNMP_CFLAGS)
 
 nodist_libsane_magicolor_la_SOURCES = magicolor-s.c
 libsane_magicolor_la_CPPFLAGS = $(AM_CPPFLAGS) -DBACKEND_NAME=magicolor
 libsane_magicolor_la_LDFLAGS = $(DIST_SANELIBS_LDFLAGS)
-libsane_magicolor_la_LIBADD = $(COMMON_LIBS) libmagicolor.la ../sanei/sanei_init_debug.lo ../sanei/sanei_constrain_value.lo  ../sanei/sanei_config.lo ../sanei/sanei_config2.lo sane_strstatus.lo ../sanei/sanei_usb.lo ../sanei/sanei_scsi.lo ../sanei/sanei_tcp.lo ../sanei/sanei_udp.lo  $(USB_LIBS) $(SOCKET_LIBS) $(MATH_LIB) $(RESMGR_LIBS)
+libsane_magicolor_la_LIBADD = $(COMMON_LIBS) libmagicolor.la ../sanei/sanei_init_debug.lo ../sanei/sanei_constrain_value.lo  ../sanei/sanei_config.lo ../sanei/sanei_config2.lo sane_strstatus.lo ../sanei/sanei_usb.lo ../sanei/sanei_scsi.lo ../sanei/sanei_tcp.lo ../sanei/sanei_udp.lo  $(USB_LIBS) $(SOCKET_LIBS) $(MATH_LIB) $(RESMGR_LIBS) $(SNMP_LIBS)
 EXTRA_DIST += magicolor.conf.in
 
 libmatsushita_la_SOURCES = matsushita.c matsushita.h
diff --git a/configure.in b/configure.in
index 7d5651496..f1e214ecc 100644
--- a/configure.in
+++ b/configure.in
@@ -185,8 +185,8 @@ else
 fi
 
 if test "$with_snmp" = "yes" -a "${LIBSNMP_EXISTS}x" = "yesx"; then
-	LIBS="$LIBS $SNMP_LIBS"
-	CFLAGS="$CFLAGS $SNMP_CFLAGS"
+	AC_SUBST(SNMP_LIBS)
+	AC_SUBST(SNMP_CFLAGS)
 	AC_DEFINE(HAVE_LIBSNMP, 1, [Define to 1 if you have the net-snmp library.])
 else
 	AC_MSG_WARN([*** Warning: net-snmp library disabled, autodetecting network scanners will not be supported.])