diff --git a/plat/intel/soc/common/socfpga_sip_svc.c b/plat/intel/soc/common/socfpga_sip_svc.c
index f4a3ea0..62fa759 100644
--- a/plat/intel/soc/common/socfpga_sip_svc.c
+++ b/plat/intel/soc/common/socfpga_sip_svc.c
@@ -930,7 +930,7 @@
 	case ALTERA_SIP_SMC_ASYNC_RESP_POLL:
 	{
 		uint32_t ret_args[8] = {0};
-		uint32_t ret_args_len;
+		uint32_t ret_args_len = 0;
 
 		status = mailbox_response_poll_v3(GET_CLIENT_ID(x1),
 						  GET_JOB_ID(x1),