diff --git a/src/Microsoft.AspNetCore.Blazor.Build/targets/BuiltInBclLinkerDescriptor.xml b/src/Microsoft.AspNetCore.Blazor.Build/targets/BuiltInBclLinkerDescriptor.xml
index 4458046afb..760d730c25 100644
--- a/src/Microsoft.AspNetCore.Blazor.Build/targets/BuiltInBclLinkerDescriptor.xml
+++ b/src/Microsoft.AspNetCore.Blazor.Build/targets/BuiltInBclLinkerDescriptor.xml
@@ -1,4 +1,4 @@
-<linker>
+<linker>
 
   <!-- This file specifies which parts of the BCL or Blazor packages must not be stripped
   by the IL linker even if they are not referenced by user code. The file format is
@@ -8,6 +8,20 @@
     <!-- 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" />
+
+      <!-- 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>