diff --git a/src/core/s7_server.cpp b/src/core/s7_server.cpp
index e66aa80..f125d3e 100644
--- a/src/core/s7_server.cpp
+++ b/src/core/s7_server.cpp
@@ -863,7 +863,7 @@ bool TS7Worker::PerformFunctionWrite()
 	{
 		ReqData[c]=PReqFunWriteDataItem(pbyte(PDUH_in)+StartData);
 
-		if ((ReqParams->Items[c].TransportSize == S7WLTimer) || (ReqParams->Items[c].TransportSize == S7WLCounter) || (ReqParams->Items[c].TransportSize == S7WLBit))
+		if ((ReqParams->Items[c].TransportSize == S7WLTimer) || (ReqParams->Items[c].TransportSize == S7WLCounter) || (ReqParams->Items[c].TransportSize == S7WLBit) || (ReqParams->Items[c].TransportSize == S7WLReal))
 			L = SwapWord(ReqData[c]->DataLength);
 		else
 			L = (SwapWord(ReqData[c]->DataLength) / 8);