diff --git a/target-ppc/cpu-models.h b/target-ppc/cpu-models.h
index 7d9e6a2ca0cf..73d8ce1e5f54 100644
--- a/target-ppc/cpu-models.h
+++ b/target-ppc/cpu-models.h
@@ -559,7 +559,7 @@ enum {
     CPU_POWERPC_POWER8E_BASE       = 0x004B0000,
     CPU_POWERPC_POWER8E_v21        = 0x004B0201,
     CPU_POWERPC_POWER8_BASE        = 0x004D0000,
-    CPU_POWERPC_POWER8_v20         = 0x004D0200,
+    CPU_POWERPC_POWER8_v20         = 0x004D0100,
     CPU_POWERPC_POWER8NVL_BASE     = 0x004C0000,
     CPU_POWERPC_POWER8NVL_v10      = 0x004C0100,
     CPU_POWERPC_POWER9_BASE        = 0x004E0000,