diff --git a/appveyor.yml b/appveyor.yml
index f428258..c8e3450 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -60,7 +60,7 @@ build_script:
 - dotnet build "test\Dapper.AmbientContext.Tests" -c %CONFIGURATION% --no-dependencies --version-suffix %BUILD_SUFFIX%
 
 after_build:
-- dotnet pack "src\Dapper.AmbientContext" -c %CONFIGURATION% --no-build --include-symbols --version-suffix %SUFFIX% -o artifacts
+- dotnet pack "src\Dapper.AmbientContext" -c %CONFIGURATION% --no-build --include-symbols --version-suffix "%SUFFIX%" -o artifacts
 
 test_script:
 - dotnet test "test\Dapper.AmbientContext.Tests\Dapper.AmbientContext.Tests.csproj" -c %CONFIGURATION%