diff --git a/appveyor.yml b/appveyor.yml
index 4051c6b5..73fbe656 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -17,6 +17,7 @@ build_script:
   - dotnet pack --include-symbols --include-source -c Release xscgen
   - 7z a -mx=9 XmlSchemaClassGenerator.%APPVEYOR_BUILD_VERSION%.zip ".\XmlSchemaClassGenerator.Console\bin\Release\net45\publish\*"
 test_script:
+  - dotnet build -c Debug
   - dotnet tool install --global coverlet.console
   - coverlet XmlSchemaClassGenerator.Tests\bin\Debug\netcoreapp2.1\XmlSchemaClassGenerator.Tests.dll --target dotnet --targetargs "test XmlSchemaClassGenerator.Tests\XmlSchemaClassGenerator.Tests.csproj --no-build" --format opencover --output ".\coverage.xml" --exclude "[XmlSampleGenerator]*"
   - pip install codecov