diff --git a/advanced/algorithms/username/pca/1.json b/advanced/algorithms/username/pca/1.json
index 0f5922647fa032d23cd583cdf659f5e23494f128..86e6aafd38245fd1b28c18f47bc4417c828ecd75 100644
--- a/advanced/algorithms/username/pca/1.json
+++ b/advanced/algorithms/username/pca/1.json
@@ -20,7 +20,7 @@
     "number-of-components": {
       "default": 5,
       "type": "uint32",
-      "number-of-components": "the number of dimensions to retain after applying PCA"
+      "description": "the number of dimensions to retain after applying PCA"
     }
   }
 }