diff --git a/lib/generators/solid_cache/install/install_generator.rb b/lib/generators/solid_cache/install/install_generator.rb
index 84e2842..458c1a2 100644
--- a/lib/generators/solid_cache/install/install_generator.rb
+++ b/lib/generators/solid_cache/install/install_generator.rb
@@ -51,7 +51,7 @@ def sqlite_database_config_with_cache
     end
 
     def app_name_from_production_database_name
-      database_yml.read.scan(/database: (\w+)_production/).flatten.first
+      database_yml.read.scan(/database: (\w+)_production/).flatten.first || (defined?(Rails) ? Rails.application.name.underscore : "app")
     end
 
     def generic_database_config_with_cache