diff --git a/src/tasks/Microsoft.NET.WebAssembly.Webcil/WebcilConverter.cs b/src/tasks/Microsoft.NET.WebAssembly.Webcil/WebcilConverter.cs
index b43484c9534d2a..3e89fc8ed67e71 100644
--- a/src/tasks/Microsoft.NET.WebAssembly.Webcil/WebcilConverter.cs
+++ b/src/tasks/Microsoft.NET.WebAssembly.Webcil/WebcilConverter.cs
@@ -117,7 +117,7 @@ public unsafe void GatherInfo(PEReader peReader, out WCFileInfo wcInfo, out PEFi
         var sections = headers.SectionHeaders;
         WebcilHeader header = default;
         header.Id = WebcilConstants.WEBCIL_MAGIC;
-        header.VersionMajor = WebcilConstants.WC_VERSION_MAJOR;
+        header.VersionMajor = 0; // WASM-TODO: add webcil V1 support
         header.VersionMinor = WebcilConstants.WC_VERSION_MINOR;
         header.CoffSections = (ushort)coffHeader.NumberOfSections;
         header.Reserved0 = 0;
diff --git a/src/tasks/Microsoft.NET.WebAssembly.Webcil/WebcilReader.cs b/src/tasks/Microsoft.NET.WebAssembly.Webcil/WebcilReader.cs
index c81beb4e8d53ad..b3ab88d218fc4c 100644
--- a/src/tasks/Microsoft.NET.WebAssembly.Webcil/WebcilReader.cs
+++ b/src/tasks/Microsoft.NET.WebAssembly.Webcil/WebcilReader.cs
@@ -79,7 +79,7 @@ private unsafe bool ReadHeader()
             header.PeDebugSize = BinaryPrimitives.ReverseEndianness(header.PeDebugSize);
         }
         if (header.Id != WebcilConstants.WEBCIL_MAGIC
-            || header.VersionMajor != WebcilConstants.WC_VERSION_MAJOR
+            || header.VersionMajor != 0 // WASM-TODO: add webcil V1 support
             || header.VersionMinor != WebcilConstants.WC_VERSION_MINOR)
         {
             return false;