diff --git a/plat/st/stm32mp1/include/platform_def.h b/plat/st/stm32mp1/include/platform_def.h
index 450a9d4..27ba6f7 100644
--- a/plat/st/stm32mp1/include/platform_def.h
+++ b/plat/st/stm32mp1/include/platform_def.h
@@ -41,7 +41,7 @@
 #define STM32MP_PRIMARY_CPU		U(0x0)
 #define STM32MP_SECONDARY_CPU		U(0x1)
 
-#define PLATFORM_CLUSTER_COUNT		ULL(1)
+#define PLATFORM_CLUSTER_COUNT		U(1)
 #define PLATFORM_CLUSTER0_CORE_COUNT	U(2)
 #define PLATFORM_CLUSTER1_CORE_COUNT	U(0)
 #define PLATFORM_CORE_COUNT		(PLATFORM_CLUSTER1_CORE_COUNT + \