diff --git a/eng/build.yml b/eng/build.yml
index ed504a394512..7790e6c75820 100644
--- a/eng/build.yml
+++ b/eng/build.yml
@@ -40,7 +40,7 @@ phases:
                   -pack -publish
                   -Configuration $(BuildConfig)
                   -Architecture $(BuildArchitecture)
-                  -p:SignCoreSdk=true -p:DotNetSignType=$(SignType)
+                  /p:SignCoreSdk=true /p:DotNetSignType=$(SignType)
         displayName: Build
         env:
           DOTNET_CLI_UI_LANGUAGE: $(_DOTNET_CLI_UI_LANGUAGE)