diff --git a/src/installer/corehost.proj b/src/installer/corehost.proj
index 21a39e02dd019..9a6068ea45fe6 100644
--- a/src/installer/corehost.proj
+++ b/src/installer/corehost.proj
@@ -30,7 +30,8 @@
       <BuildArgs Condition="'$(CMakeArgs)' != ''">$(BuildArgs) $(CMakeArgs)</BuildArgs>
       <BuildArgs>$(BuildArgs) -coreclrartifacts $(CoreCLRArtifactsPath)</BuildArgs>
       <BuildArgs Condition="'$(Ninja)' == 'true'">$(BuildArgs) -ninja</BuildArgs>
-      <BuildArgs>$(BuildArgs) -runtimeflavor $(RuntimeFlavor) /p:OfficialBuildId="$(OfficialBuildId)"</BuildArgs>
+      <BuildArgs>$(BuildArgs) -runtimeflavor $(RuntimeFlavor)</BuildArgs>
+      <BuildArgs Condition="'$(OfficialBuildId)' != ''">$(BuildArgs) /p:OfficialBuildId="$(OfficialBuildId)"</BuildArgs>
     </PropertyGroup>
 
     <!--
diff --git a/src/libraries/Native/build-native.proj b/src/libraries/Native/build-native.proj
index ce45491754421..27138adbcf6c0 100644
--- a/src/libraries/Native/build-native.proj
+++ b/src/libraries/Native/build-native.proj
@@ -5,7 +5,8 @@
     <NativeVersionFile Condition="'$(TargetOS)' != 'windows'">$(ArtifactsObjDir)_version.c</NativeVersionFile>
     <TargetFramework>$(BuildTargetFramework)</TargetFramework>
     <TargetFramework Condition="'$(TargetFramework)' == ''">$(NetCoreAppCurrent)</TargetFramework>
-    <_BuildNativeArgs>$(TargetArchitecture) $(Configuration) outconfig $(TargetFramework)-$(TargetOS)-$(Configuration)-$(TargetArchitecture) -os $(TargetOS) /p:OfficialBuildId="$(OfficialBuildId)"</_BuildNativeArgs>
+    <_BuildNativeArgs>$(TargetArchitecture) $(Configuration) outconfig $(TargetFramework)-$(TargetOS)-$(Configuration)-$(TargetArchitecture) -os $(TargetOS)</_BuildNativeArgs>
+    <_BuildNativeArgs Condition="'$(OfficialBuildId)' != ''">$(_BuildNativeArgs) /p:OfficialBuildId="$(OfficialBuildId)"</_BuildNativeArgs>
   </PropertyGroup>
 
   <ItemGroup>