diff --git a/lib/datadog/core/configuration/base.rb b/lib/datadog/core/configuration/base.rb
index 6ffcb53c7ad..ad71482e181 100644
--- a/lib/datadog/core/configuration/base.rb
+++ b/lib/datadog/core/configuration/base.rb
@@ -91,7 +91,7 @@ def dig(*options)
 
           def reset!
             reset_options!
-            Datadog::AppSec.settings.send(:reset!)
+            Datadog::AppSec.settings.send(:reset!) if defined?(Datadog::AppSec)
           end
         end
       end