diff --git a/src/vanilla/ClientModelExtensions.cs b/src/vanilla/ClientModelExtensions.cs
index e901a11..a8ff458 100644
--- a/src/vanilla/ClientModelExtensions.cs
+++ b/src/vanilla/ClientModelExtensions.cs
@@ -179,7 +179,7 @@ private static string GetSeparator(this CollectionFormat format)
         }
 
         /// <summary>
-        /// Format the value of a sequence given the modeled element format. Note that only sequences of strings are supported.
+        /// Format the value of a sequence given the modeled element format.
         /// </summary>
         /// <param name="parameter">The parameter to format.</param>
         /// <returns>A reference to the formatted parameter value.</returns>
@@ -191,19 +191,6 @@ public static string GetFormattedReferenceValue(this Parameter parameter)
                 return parameter.Name;
             }
 
-            PrimaryType primaryType = sequence.ElementType as PrimaryType;
-            EnumType enumType = sequence.ElementType as EnumType;
-            if (enumType != null && enumType.ModelAsString)
-            {
-                primaryType = New<PrimaryType>(KnownPrimaryType.String);
-            }
-
-            if (primaryType == null || primaryType.KnownPrimaryType != KnownPrimaryType.String)
-            {
-                throw new InvalidOperationException(
-                    "Cannot generate a formatted sequence from a " + $"non-string array parameter {parameter}");
-            }
-
             return string.Format("{0}.nil? ? nil : {0}.join('{1}')", parameter.Name, parameter.CollectionFormat.GetSeparator());
         }