diff --git a/configs/P2020RDB-PC_defconfig b/configs/P2020RDB-PC_defconfig
index f933ed4..15f2a97 100644
--- a/configs/P2020RDB-PC_defconfig
+++ b/configs/P2020RDB-PC_defconfig
@@ -1,4 +1,5 @@
 CONFIG_PPC=y
+CONFIG_SYS_IMMR=0xFFE00000
 CONFIG_SYS_TEXT_BASE=0xEFF40000
 CONFIG_SYS_MALLOC_LEN=0x100000
 CONFIG_ENV_SIZE=0x2000