diff --git a/plat/xilinx/zynqmp/pm_service/pm_svc_main.c b/plat/xilinx/zynqmp/pm_service/pm_svc_main.c
index 98dbe7d6e876e71d6c1c63c33984f9416bd5c3e7..3f4f0691e5ebbb81f768f01dc9f4d178e3e6d39e 100644
--- a/plat/xilinx/zynqmp/pm_service/pm_svc_main.c
+++ b/plat/xilinx/zynqmp/pm_service/pm_svc_main.c
@@ -423,7 +423,7 @@ uint64_t pm_smc_handler(uint32_t smc_fid, uint64_t x1, uint64_t x2, uint64_t x3,
 	{
 		uint32_t result[4] = {0};
 
-		pm_get_callbackdata(result, (sizeof(result)/sizeof(uint32_t)));
+		pm_get_callbackdata(result, ARRAY_SIZE(result));
 		SMC_RET2(handle,
 			 (uint64_t)result[0] | ((uint64_t)result[1] << 32),
 			 (uint64_t)result[2] | ((uint64_t)result[3] << 32));