diff --git a/lib/rspec/openapi/schema_merger.rb b/lib/rspec/openapi/schema_merger.rb
index da8e0f1c..a18e5d37 100644
--- a/lib/rspec/openapi/schema_merger.rb
+++ b/lib/rspec/openapi/schema_merger.rb
@@ -33,7 +33,8 @@ def deep_reverse_merge!(base, spec)
       elsif base[key].is_a?(Array) && value.is_a?(Array)
         if key == "parameters"
           # merge arrays
-          base[key] |= value
+          keys = base[key].map { |val| val.slice('name', 'in') }
+          value.each { |val| base[key].push(val) if keys.exclude?(val.slice('name', 'in')) }
         end
       else
         # no-op
diff --git a/spec/rails/doc/openapi.yaml b/spec/rails/doc/openapi.yaml
index 9d2f3612..eaca4301 100644
--- a/spec/rails/doc/openapi.yaml
+++ b/spec/rails/doc/openapi.yaml
@@ -176,12 +176,6 @@ paths:
         schema:
           type: integer
         example: 1
-      - name: id
-        in: path
-        required: true
-        schema:
-          type: integer
-        example: 2
       responses:
         '200':
           description: returns a table