diff --git a/index.html b/index.html
index 7b384fc..a36fda1 100644
--- a/index.html
+++ b/index.html
@@ -2,7 +2,7 @@
   @prefix foaf: <http://xmlns.com/foaf/0.1/>.
   @prefix schema: <https://schema.org/>.
   @prefix xsd: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>.
-  @prefix photo <https://razoreater.github.io/pht/#>.
+  @prefix photo: <https://razoreater.github.io/pht/#>.
 
   <https://razoreater.github.io/iam/#me> a foaf:Person;
     foaf:name "Jens Deprez"^^xsd:string;