diff --git a/arch/mips/include/asm/lasat/lasat.h b/arch/mips/include/asm/lasat/lasat.h
index caeba1e302a29c8b477348931e33be6284c009b2..a1ada1c27c16c305ea92c889ae8e83b9742af021 100644
--- a/arch/mips/include/asm/lasat/lasat.h
+++ b/arch/mips/include/asm/lasat/lasat.h
@@ -227,6 +227,7 @@ extern void lasat_write_eeprom_info(void);
  * It is used for the bit-banging rtc and eeprom drivers */
 
 #include <linux/delay.h>
+#include <linux/smp.h>
 
 /* calculating with the slowest board with 100 MHz clock */
 #define LASAT_100_DIVIDER 20