diff --git a/types/react/tsconfig.json b/types/react/tsconfig.json
index 6106c66903..0dd4d56565 100644
--- a/types/react/tsconfig.json
+++ b/types/react/tsconfig.json
@@ -15,7 +15,7 @@
             "es6"
         ],
         "noImplicitAny": true,
-        "noImplicitThis": false,
+        "noImplicitThis": true,
         "strictNullChecks": true,
         "strictFunctionTypes": true,
         "baseUrl": "../",
@@ -27,4 +27,4 @@
         "forceConsistentCasingInFileNames": true,
         "jsx": "preserve"
     }
-}
\ No newline at end of file
+}