diff --git a/src/platform/avr32/MIZAR32/mizar32_conf.h b/src/platform/avr32/MIZAR32/mizar32_conf.h
index b62fd596..8b82b784 100644
--- a/src/platform/avr32/MIZAR32/mizar32_conf.h
+++ b/src/platform/avr32/MIZAR32/mizar32_conf.h
@@ -15,14 +15,11 @@
 // Define here what components you want for this platform
 
 #define BUILD_MMCFS
-//#define BUILD_XMODEM
-//#define BUILD_SHELL
 //#define BUILD_ROMFS
 #define BUILD_CON_GENERIC
 //#define BUILD_RPC
 #define BUF_ENABLE_UART
 #define BUILD_C_INT_HANDLERS
-#define BUILD_LUA_INT_HANDLERS
 //#define BUILD_RFS
 //#define BUILD_SERMUX
 
@@ -32,10 +29,13 @@
 #else
   // Build options for 256KB and 512KB flash
 # define RAM_SIZE 0x10000
+# define BUILD_SHELL
+# define BUILD_XMODEM
 # define BUILD_ADC
 # define BUILD_LCD
 # define BUILD_TERM
 # define BUILD_UIP
+# define BUILD_LUA_INT_HANDLERS
 #endif
 
 #ifdef BUILD_UIP
@@ -121,6 +121,8 @@
 #define LUA_PLATFORM_LIBS_ROM\
   _ROM( AUXLIB_PD, luaopen_pd, pd_map )\
   _ROM( AUXLIB_PIO, luaopen_pio, pio_map )\
+  _ROM( AUXLIB_TMR, luaopen_tmr, tmr_map )\
+  _ROM( LUA_MATHLIBNAME, luaopen_math, math_map )\
 
 #else