diff --git a/html/tutorial2/ontology1.owl b/html/tutorial2/ontology1.owl
index ac3e7da02488185f43f5cd3b20bce3be8cde21e0..f1a1d7034ec4d0fd18fccb16284359135886dc39 100644
--- a/html/tutorial2/ontology1.owl
+++ b/html/tutorial2/ontology1.owl
@@ -553,7 +553,7 @@
 <Person>
   <lastname>Ruiz</lastname>
   <firstname>Carlos</firstname>
-  <affiliation>iSOCO</afiliation>
+  <affiliation>iSOCO</affiliation>
   <city>Madrid</city>
   <country>ES</country>
 </Person>
@@ -561,7 +561,7 @@
 <Person>
   <lastname>Córdoba</lastname>
   <firstname>Carmen</firstname>
-  <affiliation>iSOCO</afiliation>
+  <affiliation>iSOCO</affiliation>
   <city>Madrid</city>
   <country>ES</country>
 </Person>