diff --git a/source/dyaml/node.d b/source/dyaml/node.d
index a1f0f1b..78f9fa1 100644
--- a/source/dyaml/node.d
+++ b/source/dyaml/node.d
@@ -182,14 +182,11 @@ struct Node
                          Node.Pair[], Node[], YAMLObject) Value;
 
         // Can Value hold this type without wrapping it in a YAMLObject?
-        template allowed(T)
-        {
-            enum allowed = isIntegral!T ||
-                           isFloatingPoint!T ||
-                           isSomeString!T ||
-                           is(Unqual!T == bool) ||
-                           Value.allowed!T;
-        }
+        enum allowed(T) = isIntegral!T ||
+                       isFloatingPoint!T ||
+                       isSomeString!T ||
+                       is(Unqual!T == bool) ||
+                       Value.allowed!T;
 
         // Stored value.
         Value value_;