diff --git a/src/Microsoft.AspNetCore.Blazor.Build/targets/BuiltInBclLinkerDescriptor.xml b/src/Microsoft.AspNetCore.Blazor.Build/targets/BuiltInBclLinkerDescriptor.xml
index 57c2a0b2eb..e441460d38 100644
--- a/src/Microsoft.AspNetCore.Blazor.Build/targets/BuiltInBclLinkerDescriptor.xml
+++ b/src/Microsoft.AspNetCore.Blazor.Build/targets/BuiltInBclLinkerDescriptor.xml
@@ -8,6 +8,19 @@
     <!-- Preserve all methods on WasmRuntime, because these are called by JS-side code
     to implement timers. Fixes https://github.com/aspnet/Blazor/issues/239 -->
     <type fullname="System.Threading.WasmRuntime" />
-  </assembly>
 
+    <!-- Mono redirects certain string constructor calls to CreateString internally, so preserve them -->
+    <type fullname="System.String">
+      <method signature="System.String CreateString(System.Char,System.Int32)" />
+      <method signature="System.String CreateString(System.Char[])" />
+      <method signature="System.String CreateString(System.Char[],System.Int32,System.Int32)" />
+      <method signature="System.String CreateString(System.Char*)" />
+      <method signature="System.String CreateString(System.Char*,System.Int32,System.Int32)" />
+      <method signature="System.String CreateString(System.Byte*)" />
+      <method signature="System.String CreateString(System.Byte*,System.Int32,System.Int32)" />
+      <method signature="System.String CreateString(System.Byte*,System.Int32,System.Int32,System.Text.Encoding)" />
+      <method signature="System.String CreateString(System.SByte*)" />
+      <method signature="System.String CreateString(System.SByte*,System.Int32,System.Int32,System.Text.Encoding)" />
+    </type>
+  </assembly>
 </linker>