diff --git a/lib/rspec/openapi/schema_builder.rb b/lib/rspec/openapi/schema_builder.rb
index 49b5272..ded1976 100644
--- a/lib/rspec/openapi/schema_builder.rb
+++ b/lib/rspec/openapi/schema_builder.rb
@@ -118,6 +118,8 @@ def build_parameter_name(key, value)
     if value.is_a?(Hash) && (value_keys = value.keys).size == 1
       value_key = value_keys.first
       build_parameter_name("#{key}[#{value_key}]", value[value_key])
+    elsif value.is_a?(Array)
+      "#{key}[]"
     else
       key
     end