diff --git a/graphql/codegen/src/cli/index.ts b/graphql/codegen/src/cli/index.ts
index 6eda80c87..1a36a11e9 100644
--- a/graphql/codegen/src/cli/index.ts
+++ b/graphql/codegen/src/cli/index.ts
@@ -9,7 +9,7 @@ import { CLI, CLIOptions, getPackageJson, Inquirerer } from 'inquirerer';
 
 import { findConfigFile, loadConfigFile } from '../core/config';
 import { generate } from '../core/generate';
-import type { GraphQLSDKConfigTarget } from '../types/config';
+import { mergeConfig, type GraphQLSDKConfigTarget } from '../types/config';
 import {
   buildDbConfig,
   buildGenerateOptions,
@@ -114,11 +114,9 @@ export const commands = async (
       let hasError = false;
       for (const name of names) {
         console.log(`\n[${name}]`);
-        const targetConfig = { ...targets[name], ...cliOptions } as GraphQLSDKConfigTarget;
-        if (targets[name].db && targetConfig.db) {
-          targetConfig.db = { ...targets[name].db, ...targetConfig.db };
-        }
-        const result = await generate(targetConfig);
+        const result = await generate(
+          mergeConfig(targets[name], cliOptions as GraphQLSDKConfigTarget),
+        );
         printResult(result);
         if (!result.success) hasError = true;
       }
diff --git a/graphql/codegen/src/cli/shared.ts b/graphql/codegen/src/cli/shared.ts
index d6e219aa1..b7c7e0875 100644
--- a/graphql/codegen/src/cli/shared.ts
+++ b/graphql/codegen/src/cli/shared.ts
@@ -9,7 +9,7 @@ import { inflektTree } from 'inflekt/transform-keys';
 import type { Question } from 'inquirerer';
 
 import type { GenerateResult } from '../core/generate';
-import type { GraphQLSDKConfigTarget } from '../types/config';
+import { mergeConfig, type GraphQLSDKConfigTarget } from '../types/config';
 
 export const splitCommas = (
   input: string | undefined,
@@ -262,9 +262,5 @@ export function buildGenerateOptions(
   const camelized = camelizeArgv(answers);
   const normalized = normalizeCodegenListOptions(camelized);
   const withDb = buildDbConfig(normalized);
-  const merged = { ...fileConfig, ...withDb } as GraphQLSDKConfigTarget;
-  if (fileConfig.db && merged.db) {
-    merged.db = { ...fileConfig.db, ...merged.db };
-  }
-  return merged;
+  return mergeConfig(fileConfig, withDb as GraphQLSDKConfigTarget);
 }