diff --git a/src/webpack/getDevConfig.ts b/src/webpack/getDevConfig.ts
index d61902953c8..6f0a00f3082 100644
--- a/src/webpack/getDevConfig.ts
+++ b/src/webpack/getDevConfig.ts
@@ -47,7 +47,7 @@ export default (payloadConfig: Config): Configuration => {
   });
 
   if (payloadConfig.admin.webpack && typeof payloadConfig.admin.webpack === 'function') {
-    config = payloadConfig.webpack(config);
+    config = payloadConfig.admin.webpack(config);
   }
 
   return config;
diff --git a/src/webpack/getProdConfig.ts b/src/webpack/getProdConfig.ts
index bdcc31c90ca..dc132d3ed71 100644
--- a/src/webpack/getProdConfig.ts
+++ b/src/webpack/getProdConfig.ts
@@ -66,7 +66,7 @@ export default (payloadConfig: Config): Configuration => {
   }
 
   if (payloadConfig.admin.webpack && typeof payloadConfig.admin.webpack === 'function') {
-    config = payloadConfig.webpack(config);
+    config = payloadConfig.admin.webpack(config);
   }
 
   return config;