diff --git a/server/drivers/Makefile.am b/server/drivers/Makefile.am
index 30b0fef..552f9e7 100644
--- a/server/drivers/Makefile.am
+++ b/server/drivers/Makefile.am
@@ -43,6 +43,7 @@ lcterm_LDADD =       libLCD.a
 lirc_LDADD =         @LIBLIRC_CLIENT@
 MD8800_LDADD =       libLCD.a
 mtc_s16209x_LDADD =  libLCD.a
+MtxOrb_LDADD =       libLCD.a libbignum.a
 NoritakeVFD_LDADD =  libLCD.a
 pyramid_LDADD =      libLCD.a
 serialVFD_LDADD =    libLCD.a libbignum.a
@@ -81,7 +82,7 @@ lirc_SOURCES =       lcd.h lircin.c lircin.h report.h
 MD8800_SOURCES =     lcd.h lcd_lib.h MD8800.c MD8800.h report.h
 ms6931_SOURCES =     lcd.h lcd_lib.h ms6931.h ms6931.c report.h
 mtc_s16209x_SOURCES =  lcd.h lcd_lib.h mtc_s16209x.c mtc_s16209x.h report.h
-MtxOrb_SOURCES =     lcd.h lcd_lib.h MtxOrb.c MtxOrb.h report.h
+MtxOrb_SOURCES =     lcd.h lcd_lib.h MtxOrb.c MtxOrb.h report.h adv_bignum.h
 NoritakeVFD_SOURCES = lcd.h lcd_lib.h NoritakeVFD.c NoritakeVFD.h report.h
 pyramid_SOURCES =    lcd.h pylcd.c pylcd.h
 sed1330_SOURCES =    lcd.h sed1330.h sed1330.c port.h lpt-port.h timing.h report.h