diff --git a/lib/uuidable/active_record.rb b/lib/uuidable/active_record.rb
index e5685f0..05718aa 100644
--- a/lib/uuidable/active_record.rb
+++ b/lib/uuidable/active_record.rb
@@ -24,7 +24,8 @@ module ClassMethods
       def uuidable(as_param: true) # rubocop:disable Metrics/AbcSize, Metrics/CyclomaticComplexity, Metrics/PerceivedComplexity
         # Configure all uuid columns for MySQL. Database may not be connected (i.e. on assets precompile), so we must supress errors.
         conn_config = respond_to?(:connection_db_config) ? connection_db_config.configuration_hash : connection_config
-        if conn_config[:adapter].include?('mysql')
+
+        if conn_config[:adapter].include?('mysql') && schema_loaded?
           begin
             columns.select { |c| c.type == :binary && c.limit == 16 && c.name.include?('uuid') }.each do |column|
               attribute column.name.to_sym, MySQLBinUUID::Type.new