diff --git a/Sources/BUSMASTER/UDS_Protocol/UDSMainWnd.cpp b/Sources/BUSMASTER/UDS_Protocol/UDSMainWnd.cpp
index 8b80c0574..5edd4224a 100644
--- a/Sources/BUSMASTER/UDS_Protocol/UDSMainWnd.cpp
+++ b/Sources/BUSMASTER/UDS_Protocol/UDSMainWnd.cpp
@@ -586,6 +586,7 @@ void CUDSMainWnd::OnBnClickedSendUD()
     KillTimer(ID_TIMER_TP);    //Added to kill the timer everyTime I've pressed the SEND button
     FSending = TRUE;        // This flag is used to know if a message has been sent from the UDSMainWnd
     Bytes_to_Show= ("\r\n   1 -> ");
+    StringToShow.Empty();
     BytesShown_Line = 1;
     m_abDatas = " ";
     CurrentService = m_omMsgDataEdit.Left(NO_OF_CHAR_IN_BYTE); //Baiasu
@@ -640,7 +641,7 @@ Modifications  :
 void  CUDSMainWnd::OnTimer(UINT_PTR nIDEvent)
 {
 
-    //Envía TesterPresent
+    //Env�a TesterPresent
     if(nIDEvent ==ID_TIMER_TP && psTxCanMsgUds->m_psTxMsg != NULL)      //Prepare the message
     {
 
diff --git a/Sources/BUSMASTER/UDS_Protocol/UDSMainWnd.h b/Sources/BUSMASTER/UDS_Protocol/UDSMainWnd.h
index ebd36db25..5c750ebd6 100644
--- a/Sources/BUSMASTER/UDS_Protocol/UDSMainWnd.h
+++ b/Sources/BUSMASTER/UDS_Protocol/UDSMainWnd.h
@@ -31,6 +31,7 @@ extern int SizeFC;
 extern int P2_Time;
 extern int P2_Time_Extended;
 extern CString Bytes_to_Show;
+extern CString StringToShow;
 
 /** This variable is used to know if a message has been sent from the UDSMainWnd  */
 extern bool FSending;
@@ -107,7 +108,7 @@ class CUDSMainWnd : public CDialog
 
     CFont m_Font;
 
-    // Declaración de funciones
+    // Declaraci�n de funciones
     (void)vInitializeUDSfFields();
 
     /**
diff --git a/Sources/BUSMASTER/UDS_Protocol/UDS_Protocol.cpp b/Sources/BUSMASTER/UDS_Protocol/UDS_Protocol.cpp
index 5e19a747c..4610621c8 100644
--- a/Sources/BUSMASTER/UDS_Protocol/UDS_Protocol.cpp
+++ b/Sources/BUSMASTER/UDS_Protocol/UDS_Protocol.cpp
@@ -55,6 +55,7 @@ int Current_Channel;
 bool FSending = FALSE;
 
 CString Bytes_to_Show= ("\r\n   1-> ");
+CString StringToShow;
 
 /** This variable is used to determinate how many continuos frames will be received */
 float TotalFrames;
@@ -194,6 +195,17 @@ void CUDS_Protocol::Show_ResponseData(unsigned char psMsg[], unsigned char Datal
         for (int ByteCounter = posFirstByte+1; ByteCounter<loc ; ByteCounter++)
         {
             UCHAR TempByte = (psMsg[ByteCounter]) ;
+
+            // Check if the character can be printed, otherwise use '?' instead
+			if ( (TempByte >= 0x20) && (TempByte <= 0x7E) )
+            {
+				StringToShow += TempByte;
+            }
+			else
+			{
+				StringToShow += '?';
+			}
+
             int Temp_char2Int =  TempByte;
             intResp = sprintf (hex,"%02X ",Temp_char2Int);
             Bytes_to_Show = Bytes_to_Show + hex;
@@ -216,8 +228,7 @@ void CUDS_Protocol::Show_ResponseData(unsigned char psMsg[], unsigned char Datal
 
             }
         }
-        omMainWnd->m_abDatas = Bytes_to_Show + '\0';
-
+        omMainWnd->m_abDatas = Bytes_to_Show + "\r\n\r\n" + StringToShow;
         omMainWnd->UpdateData(false);
     }
 }