diff --git a/src/Microsoft.Tye.Core/ProcessUtil.cs b/src/Microsoft.Tye.Core/ProcessUtil.cs
index 644ebf21..2fae79d7 100644
--- a/src/Microsoft.Tye.Core/ProcessUtil.cs
+++ b/src/Microsoft.Tye.Core/ProcessUtil.cs
@@ -66,32 +66,36 @@ namespace Microsoft.Tye
             var outputBuilder = new StringBuilder();
             process.OutputDataReceived += (_, e) =>
             {
-                if (e.Data != null)
+                if (e.Data == null)
                 {
-                    if (outputDataReceived != null)
-                    {
-                        outputDataReceived.Invoke(e.Data);
-                    }
-                    else
-                    {
-                        outputBuilder.AppendLine(e.Data);
-                    }
+                    return;
+                }
+
+                if (outputDataReceived != null)
+                {
+                    outputDataReceived.Invoke(e.Data);
+                }
+                else
+                {
+                    outputBuilder.AppendLine(e.Data);
                 }
             };
 
             var errorBuilder = new StringBuilder();
             process.ErrorDataReceived += (_, e) =>
             {
-                if (e.Data != null)
+                if (e.Data == null)
                 {
-                    if (errorDataReceived != null)
-                    {
-                        errorDataReceived.Invoke(e.Data);
-                    }
-                    else
-                    {
-                        errorBuilder.AppendLine(e.Data);
-                    }
+                    return;
+                }
+
+                if (errorDataReceived != null)
+                {
+                    errorDataReceived.Invoke(e.Data);
+                }
+                else
+                {
+                    errorBuilder.AppendLine(e.Data);
                 }
             };