diff --git a/src/main/webapp/WEB-INF/jsp/exception.jsp b/src/main/webapp/WEB-INF/jsp/exception.jsp
index 86416dbaaaa692928679a45524eb9e04445b6dfd..f7aa16f977c04527e080c5bdaeced59fcde6e650 100644
--- a/src/main/webapp/WEB-INF/jsp/exception.jsp
+++ b/src/main/webapp/WEB-INF/jsp/exception.jsp
@@ -1,7 +1,9 @@
-<html lang="en">
+<!DOCTYPE html> 
+
 <%@ taglib prefix="spring" uri="http://www.springframework.org/tags" %>
 <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
 
+<html lang="en">
 <jsp:include page="fragments/headTag.jsp"/>
 
 <body>
diff --git a/src/main/webapp/WEB-INF/jsp/owners/createOrUpdateOwnerForm.jsp b/src/main/webapp/WEB-INF/jsp/owners/createOrUpdateOwnerForm.jsp
index 9179dbc3abdd7c12d7518ec45a650a115495d794..18d45cffdff4d8cbaca3e91f0b08333fdfc490ad 100644
--- a/src/main/webapp/WEB-INF/jsp/owners/createOrUpdateOwnerForm.jsp
+++ b/src/main/webapp/WEB-INF/jsp/owners/createOrUpdateOwnerForm.jsp
@@ -1,3 +1,5 @@
+<!DOCTYPE html> 
+
 <%@ taglib prefix="spring" uri="http://www.springframework.org/tags" %>
 <%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
 <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
diff --git a/src/main/webapp/WEB-INF/jsp/owners/findOwners.jsp b/src/main/webapp/WEB-INF/jsp/owners/findOwners.jsp
index cd2808c88ce3230882981fa95de66e83a90bbd29..a41d07956d7427698188fbed234c8eda39006cfe 100644
--- a/src/main/webapp/WEB-INF/jsp/owners/findOwners.jsp
+++ b/src/main/webapp/WEB-INF/jsp/owners/findOwners.jsp
@@ -1,3 +1,5 @@
+<!DOCTYPE html> 
+
 <%@ taglib prefix="spring" uri="http://www.springframework.org/tags" %>
 <%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
 <%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
diff --git a/src/main/webapp/WEB-INF/jsp/owners/ownerDetails.jsp b/src/main/webapp/WEB-INF/jsp/owners/ownerDetails.jsp
index 79d86060872414d8c9866e56f54055815f9720a1..0cb449dd16043a5247544aed627bce895768ee7e 100644
--- a/src/main/webapp/WEB-INF/jsp/owners/ownerDetails.jsp
+++ b/src/main/webapp/WEB-INF/jsp/owners/ownerDetails.jsp
@@ -1,3 +1,5 @@
+<!DOCTYPE html> 
+
 <%@ taglib prefix="spring" uri="http://www.springframework.org/tags" %>
 <%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
 <%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %>
diff --git a/src/main/webapp/WEB-INF/jsp/owners/ownersList.jsp b/src/main/webapp/WEB-INF/jsp/owners/ownersList.jsp
index ac2aafdb924d33550d1d3c4d91742fe160d59408..b95c8e099479ea5fc940215f431c2c015bdcec90 100644
--- a/src/main/webapp/WEB-INF/jsp/owners/ownersList.jsp
+++ b/src/main/webapp/WEB-INF/jsp/owners/ownersList.jsp
@@ -1,3 +1,5 @@
+<!DOCTYPE html> 
+
 <%@ taglib prefix="spring" uri="http://www.springframework.org/tags" %>
 <%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
 <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
diff --git a/src/main/webapp/WEB-INF/jsp/pets/createOrUpdatePetForm.jsp b/src/main/webapp/WEB-INF/jsp/pets/createOrUpdatePetForm.jsp
index c33986abf1bc493a4fdcfad222df0e2ef8167404..ee9c0a91e672091b6e30e8d4206d7e10dd82e9d6 100644
--- a/src/main/webapp/WEB-INF/jsp/pets/createOrUpdatePetForm.jsp
+++ b/src/main/webapp/WEB-INF/jsp/pets/createOrUpdatePetForm.jsp
@@ -1,3 +1,5 @@
+<!DOCTYPE html> 
+
 <%@ taglib prefix="spring" uri="http://www.springframework.org/tags" %>
 <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
 <%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
diff --git a/src/main/webapp/WEB-INF/jsp/pets/createOrUpdateVisitForm.jsp b/src/main/webapp/WEB-INF/jsp/pets/createOrUpdateVisitForm.jsp
index e1c8a052d6e7300df70c8692a63d6cd14aa55844..4c65be890bbc3665acc4755a626d59ae0978be66 100644
--- a/src/main/webapp/WEB-INF/jsp/pets/createOrUpdateVisitForm.jsp
+++ b/src/main/webapp/WEB-INF/jsp/pets/createOrUpdateVisitForm.jsp
@@ -1,3 +1,5 @@
+<!DOCTYPE html> 
+
 <%@ taglib prefix="spring" uri="http://www.springframework.org/tags" %>
 <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
 <%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
diff --git a/src/main/webapp/WEB-INF/jsp/vets/vetList.jsp b/src/main/webapp/WEB-INF/jsp/vets/vetList.jsp
index 93ad827d976e99465e7524b2b8e4b2f634370b2c..07bbf636a1f981f009933ac2b2026d87664a1af0 100644
--- a/src/main/webapp/WEB-INF/jsp/vets/vetList.jsp
+++ b/src/main/webapp/WEB-INF/jsp/vets/vetList.jsp
@@ -1,3 +1,5 @@
+<!DOCTYPE html> 
+
 <%@ taglib prefix="spring" uri="http://www.springframework.org/tags" %>
 <%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
 <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
diff --git a/src/main/webapp/WEB-INF/jsp/welcome.jsp b/src/main/webapp/WEB-INF/jsp/welcome.jsp
index 12c9f2c716a0b2a7cac7d6f23f7cf23b0994fc6e..3e18b427498c15552b97517ed3b29f075c57ea07 100644
--- a/src/main/webapp/WEB-INF/jsp/welcome.jsp
+++ b/src/main/webapp/WEB-INF/jsp/welcome.jsp
@@ -1,3 +1,5 @@
+<!DOCTYPE html> 
+
 <%@ taglib prefix="spring" uri="http://www.springframework.org/tags" %>
 <%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>