diff --git a/arch/mips/configs/pb1500_defconfig b/arch/mips/configs/pb1500_defconfig
index 0706727..b11f0e8 100644
--- a/arch/mips/configs/pb1500_defconfig
+++ b/arch/mips/configs/pb1500_defconfig
@@ -9,6 +9,7 @@
 # Machine selection
 #
 CONFIG_ZONE_DMA=y
+CONFIG_MACH_ALCHEMY=y
 # CONFIG_MIPS_MTX1 is not set
 # CONFIG_MIPS_BOSPORUS is not set
 # CONFIG_MIPS_PB1000 is not set