diff --git a/index.html b/index.html
index bd24c06..d675945 100644
--- a/index.html
+++ b/index.html
@@ -2,7 +2,7 @@
@prefix foaf: .
@prefix schema: .
@prefix xsd: .
- @prefix photo .
+ @prefix photo: .
a foaf:Person;
foaf:name "Jens Deprez"^^xsd:string;