diff --git a/Templates/MSBuild/FlagTables/v140_CL.json b/Templates/MSBuild/FlagTables/v140_CL.json
index 49ad6257b7..0bf6063b7d 100644
--- a/Templates/MSBuild/FlagTables/v140_CL.json
+++ b/Templates/MSBuild/FlagTables/v140_CL.json
@@ -111,6 +111,13 @@
     "value": "Disabled",
     "flags": []
   },
+  {
+    "name": "Optimization",
+    "switch": "Os",
+    "comment": "Minimize Size",
+    "value": "MinSize",
+    "flags": []
+  },
   {
     "name": "Optimization",
     "switch": "O1",
diff --git a/Templates/MSBuild/FlagTables/v141_CL.json b/Templates/MSBuild/FlagTables/v141_CL.json
index 2da38aa4c6..773f84e215 100644
--- a/Templates/MSBuild/FlagTables/v141_CL.json
+++ b/Templates/MSBuild/FlagTables/v141_CL.json
@@ -132,6 +132,13 @@
     "value": "Disabled",
     "flags": []
   },
+  {
+    "name": "Optimization",
+    "switch": "Os",
+    "comment": "Minimize Size",
+    "value": "MinSize",
+    "flags": []
+  },
   {
     "name": "Optimization",
     "switch": "O1",