diff --git a/plat/arm/board/sgi575/include/platform_def.h b/plat/arm/board/sgi575/include/platform_def.h
index 394a2e8..16e2898 100644
--- a/plat/arm/board/sgi575/include/platform_def.h
+++ b/plat/arm/board/sgi575/include/platform_def.h
@@ -23,4 +23,6 @@
 /* System power domain level */
 #define CSS_SYSTEM_PWR_DMN_LVL		ARM_PWR_LVL2
 
+#define PLAT_MAX_PWR_LVL		ARM_PWR_LVL1
+
 #endif /* PLATFORM_DEF_H */
diff --git a/plat/arm/board/sgiclarka/include/platform_def.h b/plat/arm/board/sgiclarka/include/platform_def.h
index 6de15c4..39907e8 100644
--- a/plat/arm/board/sgiclarka/include/platform_def.h
+++ b/plat/arm/board/sgiclarka/include/platform_def.h
@@ -23,4 +23,6 @@
 /* System power domain level */
 #define CSS_SYSTEM_PWR_DMN_LVL		ARM_PWR_LVL2
 
+#define PLAT_MAX_PWR_LVL		ARM_PWR_LVL1
+
 #endif /* PLATFORM_DEF_H */