diff --git a/source/nanoFramework.Tools.DebugLibrary.Shared/WireProtocol/Engine.cs b/source/nanoFramework.Tools.DebugLibrary.Shared/WireProtocol/Engine.cs
index 46b6de2b..d7f8b2d7 100644
--- a/source/nanoFramework.Tools.DebugLibrary.Shared/WireProtocol/Engine.cs
+++ b/source/nanoFramework.Tools.DebugLibrary.Shared/WireProtocol/Engine.cs
@@ -1282,7 +1282,7 @@ public Commands.Monitor_OemInfo.Reply GetMonitorOemInfo()
                 {
                     Commands.Monitor_WriteMemory.Reply cmdReply = reply.Payload as Commands.Monitor_WriteMemory.Reply;
 
-                    if (!reply.IsPositiveAcknowledge())
+                    if (!reply.IsPositiveAcknowledge() || cmdReply.ErrorCode != 0)
                     {
                         return (cmdReply.ErrorCode, false);
                     }