diff --git a/src/tsconfig-base.json b/src/tsconfig-base.json
index 5ea04ea2..e29f3b25 100644
--- a/src/tsconfig-base.json
+++ b/src/tsconfig-base.json
@@ -9,6 +9,7 @@
     "pretty": true,
 
     "incremental": true,
-    "experimentalDecorators": true
+    "experimentalDecorators": true,
+    "useDefineForClassFields": false
   }
 }