diff --git a/plat/intel/soc/common/sip/socfpga_sip_fcs.c b/plat/intel/soc/common/sip/socfpga_sip_fcs.c
index eacc4dd..facee0f 100644
--- a/plat/intel/soc/common/sip/socfpga_sip_fcs.c
+++ b/plat/intel/soc/common/sip/socfpga_sip_fcs.c
@@ -979,7 +979,7 @@
 		return INTEL_SIP_SMC_STATUS_REJECTED;
 	}
 
-	if (data_size >= src_size) {
+	if (data_size > src_size) {
 		return INTEL_SIP_SMC_STATUS_REJECTED;
 	}