diff --git a/src/SourceBuild/content/Directory.Build.props b/src/SourceBuild/content/Directory.Build.props
index 27fcb621c..c17a2e52f 100644
--- a/src/SourceBuild/content/Directory.Build.props
+++ b/src/SourceBuild/content/Directory.Build.props
@@ -21,6 +21,8 @@
   <PropertyGroup Label="CalculateArch">
     <BuildArchitecture>$([System.Runtime.InteropServices.RuntimeInformation]::ProcessArchitecture.ToString().ToLowerInvariant)</BuildArchitecture>
     <HostArchitecture Condition="'$(HostArchitecture)' == ''">$(BuildArchitecture)</HostArchitecture>
+
+    <!-- When building on non-x64 architectures, there may be no cross-compilation available, select a target architecture that is the same as the build. -->
     <TargetArchitecture Condition="'$(TargetArchitecture)' == '' and '$(BuildArchitecture)' == 'arm'">arm</TargetArchitecture>
     <TargetArchitecture Condition="'$(TargetArchitecture)' == '' and '$(BuildArchitecture)' == 'armv6'">armv6</TargetArchitecture>
     <TargetArchitecture Condition="'$(TargetArchitecture)' == '' and '$(BuildArchitecture)' == 'armel'">armel</TargetArchitecture>
@@ -28,9 +30,10 @@
     <TargetArchitecture Condition="'$(TargetArchitecture)' == '' and '$(BuildArchitecture)' == 'loongarch64'">loongarch64</TargetArchitecture>
     <TargetArchitecture Condition="'$(TargetArchitecture)' == '' and '$(BuildArchitecture)' == 's390x'">s390x</TargetArchitecture>
     <TargetArchitecture Condition="'$(TargetArchitecture)' == '' and '$(BuildArchitecture)' == 'ppc64le'">ppc64le</TargetArchitecture>
-    <TargetArchitecture Condition="'$(TargetArchitecture)' == '' and '$(TargetsMobile)' == 'true'">x64</TargetArchitecture>
+
     <TargetArchitecture Condition="'$(OverrideTargetRid)' != ''">$(OverrideTargetRid.Substring($(OverrideTargetRid.LastIndexOf('-'))).TrimStart('-'))</TargetArchitecture>
     <TargetArchitecture Condition="'$(TargetArchitecture)' == ''">x64</TargetArchitecture>
+
     <Platform Condition="'$(Platform)' == '' and '$(InferPlatformFromTargetArchitecture)' == 'true'">$(TargetArchitecture)</Platform>
     <Platform Condition="'$(Platform)' == ''">AnyCPU</Platform>
   </PropertyGroup>