diff --git a/src/Microsoft.Cci.Extensions/Mappings/AttributesMapping.cs b/src/Microsoft.Cci.Extensions/Mappings/AttributesMapping.cs
index 3017519f9b5..73be2d97f3f 100644
--- a/src/Microsoft.Cci.Extensions/Mappings/AttributesMapping.cs
+++ b/src/Microsoft.Cci.Extensions/Mappings/AttributesMapping.cs
@@ -64,11 +64,11 @@ protected virtual IEnumerable<ICustomAttribute> GetAttributes(T element)
         {
             IReference reference = element as IReference;
             if (reference != null)
-                return reference.Attributes;
+                return reference.Attributes.Where(Filter.Include);
 
             IEnumerable<ICustomAttribute> attributes = element as IEnumerable<ICustomAttribute>;
             if (attributes != null)
-                return attributes;
+                return attributes.Where(Filter.Include);
 
             return null;
         }