diff --git a/src/System.Management.Automation/utils/MshTraceSource.cs b/src/System.Management.Automation/utils/MshTraceSource.cs
index 41486f5c0f..1b5b7c305a 100644
--- a/src/System.Management.Automation/utils/MshTraceSource.cs
+++ b/src/System.Management.Automation/utils/MshTraceSource.cs
@@ -178,11 +178,6 @@ namespace System.Management.Automation
                     PSTraceSource.TraceCatalog[result.FullName] = result;
                 }
 
-#if !CORECLR    // System.AppDomain is not in ProjectK
-                // Trace the global header if this is the first
-                // trace object for the AppDomain and tracing flags
-                // are enabled.
-
                 if (result.Options != PSTraceSourceOptions.None &&
                     traceHeaders)
                 {
@@ -191,7 +186,6 @@ namespace System.Management.Automation
                     // Trace the object specific tracer information
                     result.TracerObjectHeader(Assembly.GetCallingAssembly());
                 }
-#endif
                 return result;
             }
         }
@@ -359,12 +353,8 @@ namespace System.Management.Automation
         /// <returns>Exception instance ready to throw</returns>
         internal static PSInvalidOperationException NewInvalidOperationException()
         {
-#if CORECLR //TODO:CORECLR StackTrace is not in CoreCLR
-            string message = string.Empty;
-#else
             string message = StringUtil.Format(AutomationExceptions.InvalidOperation,
                     new System.Diagnostics.StackTrace().GetFrame(1).GetMethod().Name);
-#endif
             var e = new PSInvalidOperationException(message);
 
             return e;
@@ -434,12 +424,8 @@ namespace System.Management.Automation
         /// <returns>Exception instance ready to throw</returns>
         internal static PSNotSupportedException NewNotSupportedException()
         {
-#if CORECLR //TODO:CORECLR StackTrace is not in CoreCLR
-            string message = string.Empty;
-#else
             string message = StringUtil.Format(AutomationExceptions.NotSupported,
                 new System.Diagnostics.StackTrace().GetFrame(0).ToString());
-#endif
             var e = new PSNotSupportedException(message);
 
             return e;
@@ -483,12 +469,8 @@ namespace System.Management.Automation
         /// <returns>Exception instance ready to throw</returns>
         internal static PSNotImplementedException NewNotImplementedException()
         {
-#if CORECLR //TODO:CORECLR StackTrace is not in CoreCLR
-            string message = string.Empty;
-#else
             string message = StringUtil.Format(AutomationExceptions.NotImplemented,
                 new System.Diagnostics.StackTrace().GetFrame(0).ToString());
-#endif
             var e = new PSNotImplementedException(message);
 
             return e;
diff --git a/src/System.Management.Automation/utils/StructuredTraceSource.cs b/src/System.Management.Automation/utils/StructuredTraceSource.cs
index ba62d4864c..0c94fa9659 100644
--- a/src/System.Management.Automation/utils/StructuredTraceSource.cs
+++ b/src/System.Management.Automation/utils/StructuredTraceSource.cs
@@ -290,7 +290,7 @@ namespace System.Management.Automation
                 FullName = fullName;
                 _name = name;
 
-#if !CORECLR // TraceSource.Attributes is not in CoreCLR
+                // TODO: move this to startup json file instead of using env var
                 string tracingEnvVar = Environment.GetEnvironmentVariable("MshEnableTrace");
 
                 if (String.Equals(
@@ -304,7 +304,6 @@ namespace System.Management.Automation
                         _flags = (PSTraceSourceOptions)Enum.Parse(typeof(PSTraceSourceOptions), options, true);
                     }
                 }
-#endif
                 ShowHeaders = traceHeaders;
                 Description = description;
             }
@@ -326,7 +325,6 @@ namespace System.Management.Automation
 #endif
         }
 
-#if !CORECLR // System.AppDomain is not in ProjectK.
         private static bool globalTraceInitialized;
 
         /// <summary>
@@ -375,7 +373,6 @@ namespace System.Management.Automation
 
             globalTraceInitialized = true;
         }
-#endif
 
         /// <summary>
         /// Outputs a header when a new StructuredTraceSource object is created
@@ -1149,9 +1146,6 @@ namespace System.Management.Automation
         /// </returns>
         private static string GetCallingMethodNameAndParameters(int skipFrames)
         {
-#if CORECLR //TODO:CORECLR StackFrame is not in CoreCLR
-            return string.Empty;
-#else
             StringBuilder methodAndParameters = null;
 
             try
@@ -1189,7 +1183,6 @@ namespace System.Management.Automation
                 // normal operation.
             }
             return methodAndParameters.ToString();
-#endif
         }
 
         // The default formatter for TraceError
@@ -1482,7 +1475,6 @@ namespace System.Management.Automation
             get { return _flags != PSTraceSourceOptions.None; }
         }
 
-#if !CORECLR // TraceSource.Attributes is not in CoreCLR
         /// <summary>
         /// Gets the attributes of the TraceSource
         /// </summary>
@@ -1493,7 +1485,6 @@ namespace System.Management.Automation
                 return TraceSource.Attributes;
             }
         }
-#endif
 
         /// <summary>
         /// Gets the listeners for the TraceSource
@@ -1891,7 +1882,6 @@ namespace System.Management.Automation
         {
         }
 
-#if !CORECLR // TraceSource.GetSupportedAttributes is not in CoreCLR
         /// <summary>
         /// Tells the config infrastructure which attributes are supported
         /// for our TraceSource
@@ -1905,7 +1895,6 @@ namespace System.Management.Automation
         {
             return new string[] { "Options" };
         }
-#endif
     }
     #endregion MonadTraceSource
 }