diff --git a/StyleCop.Analyzers/StyleCop.Analyzers.Test/Helpers/DiagnosticVerifier.Helper.cs b/StyleCop.Analyzers/StyleCop.Analyzers.Test/Helpers/DiagnosticVerifier.Helper.cs
index 2186a287a..d5b471109 100644
--- a/StyleCop.Analyzers/StyleCop.Analyzers.Test/Helpers/DiagnosticVerifier.Helper.cs
+++ b/StyleCop.Analyzers/StyleCop.Analyzers.Test/Helpers/DiagnosticVerifier.Helper.cs
@@ -64,10 +64,22 @@ protected static async Task<ImmutableArray<Diagnostic>> GetSortedDiagnosticsFrom
                 projects.Add(document.Project);
             }
 
+            var supportedDiagnosticsSpecificOptions = new Dictionary<string, ReportDiagnostic>();
+            foreach (var diagnostic in analyzer.SupportedDiagnostics)
+            {
+                // make sure the analyzers we are testing are enabled
+                supportedDiagnosticsSpecificOptions[diagnostic.Id] = ReportDiagnostic.Default;
+            }
+
             var diagnostics = ImmutableArray.CreateBuilder<Diagnostic>();
             foreach (var project in projects)
             {
-                var compilation = await project.GetCompilationAsync(cancellationToken).ConfigureAwait(false);
+                // update the project compilation options
+                var modifiedSpecificDiagnosticOptions = project.CompilationOptions.SpecificDiagnosticOptions.SetItems(supportedDiagnosticsSpecificOptions);
+                var modifiedCompilationOptions = project.CompilationOptions.WithSpecificDiagnosticOptions(modifiedSpecificDiagnosticOptions);
+                var processedProject = project.WithCompilationOptions(modifiedCompilationOptions);
+
+                var compilation = await processedProject.GetCompilationAsync(cancellationToken).ConfigureAwait(false);
                 var compilationWithAnalyzers = compilation.WithAnalyzers(ImmutableArray.Create(analyzer), null, cancellationToken);
                 var compilerDiagnostics = compilation.GetDiagnostics(cancellationToken);
                 var compilerErrors = compilerDiagnostics.Where(i => i.Severity == DiagnosticSeverity.Error);