diff --git a/Templates/MSBuild/FlagTables/v142_CSharp.json b/Templates/MSBuild/FlagTables/v142_CSharp.json
index 5989aea1ec..9164849005 100644
--- a/Templates/MSBuild/FlagTables/v142_CSharp.json
+++ b/Templates/MSBuild/FlagTables/v142_CSharp.json
@@ -200,6 +200,13 @@
     "value": "pdbonly",
     "flags": []
   },
+  {
+    "name":  "DebugType",
+    "switch": "debug:portable",
+    "comment": "",
+    "value": "portable",
+    "flags": []
+  },
   {
     "name":  "Optimize",
     "switch": "optimize",