diff --git a/utils/generate_dotnet_channels.js b/utils/generate_dotnet_channels.js
index 979604faf8c83..b6f0b7716e7bd 100644
--- a/utils/generate_dotnet_channels.js
+++ b/utils/generate_dotnet_channels.js
@@ -144,7 +144,10 @@ function properties(properties, indent, onlyOptional, parentName, level) {
         continue;
       ts.push('');
       ts.push(`${indent}[JsonPropertyName("${name}")]`);
-      ts.push(`${indent}public ${inner.ts}${nullableSuffix(inner)} ${toTitleCase(name)} { get; set; }`);
+      let suffix = ''
+      if (!['bool', 'int', 'System.Text.Json.JsonElement'].includes(inner.ts))
+        suffix = ' = null!;'
+      ts.push(`${indent}public ${inner.ts}${nullableSuffix(inner)} ${toTitleCase(name)} { get; set; }${suffix}`);
       const wrapped = inner.optional ? `tOptional(${inner.scheme})` : inner.scheme;
       scheme.push(`${indent}${name}: ${wrapped},`);
     }