diff --git a/src/Umbraco.Web/PublishedContentExtensions.cs b/src/Umbraco.Web/PublishedContentExtensions.cs
index 530c9bd9b4..f1e9e66e70 100644
--- a/src/Umbraco.Web/PublishedContentExtensions.cs
+++ b/src/Umbraco.Web/PublishedContentExtensions.cs
@@ -799,7 +799,7 @@ namespace Umbraco.Web
             return content.DescendantsOrSelf(false, p => p.Level >= level, culture);
         }
 
-        public static IEnumerable<IPublishedContent> Descendants(this IPublishedContent content, string contentTypeAlias, string culture = null)
+        public static IEnumerable<IPublishedContent> Descendants(this IPublishedContent content, string contentTypeAlias, string culture)
         {
             return content.DescendantsOrSelf(false, p => p.ContentType.Alias == contentTypeAlias, culture);
         }
@@ -826,7 +826,7 @@ namespace Umbraco.Web
             return content.DescendantsOrSelf(true, p => p.Level >= level, culture);
         }
 
-        public static IEnumerable<IPublishedContent> DescendantsOrSelf(this IPublishedContent content, string contentTypeAlias, string culture = null)
+        public static IEnumerable<IPublishedContent> DescendantsOrSelf(this IPublishedContent content, string contentTypeAlias, string culture)
         {
             return content.DescendantsOrSelf(true, p => p.ContentType.Alias == contentTypeAlias, culture);
         }
@@ -853,7 +853,7 @@ namespace Umbraco.Web
             return content.EnumerateDescendants(false, culture).FirstOrDefault(x => x.Level == level);
         }
 
-        public static IPublishedContent Descendant(this IPublishedContent content, string contentTypeAlias, string culture = null)
+        public static IPublishedContent Descendant(this IPublishedContent content, string contentTypeAlias, string culture)
         {
             return content.EnumerateDescendants(false, culture).FirstOrDefault(x => x.ContentType.Alias == contentTypeAlias);
         }
@@ -880,7 +880,7 @@ namespace Umbraco.Web
             return content.EnumerateDescendants(true, culture).FirstOrDefault(x => x.Level == level);
         }
 
-        public static IPublishedContent DescendantOrSelf(this IPublishedContent content, string contentTypeAlias, string culture = null)
+        public static IPublishedContent DescendantOrSelf(this IPublishedContent content, string contentTypeAlias, string culture)
         {
             return content.EnumerateDescendants(true, culture).FirstOrDefault(x => x.ContentType.Alias == contentTypeAlias);
         }
@@ -1017,7 +1017,7 @@ namespace Umbraco.Web
         /// <summary>
         /// Gets the first child of the content, of a given content type.
         /// </summary>
-        public static IPublishedContent FirstChild(this IPublishedContent content, string alias, string culture = null) // fixme/task oops
+        public static IPublishedContent FirstChild(this IPublishedContent content, string alias, string culture)
         {
             return content.Children(culture,alias).FirstOrDefault();
         }