diff --git a/RhSolutions.Api/Services/TPieceQueryModifier.cs b/RhSolutions.Api/Services/TPieceQueryModifier.cs
index 7ec6439..be00ed7 100644
--- a/RhSolutions.Api/Services/TPieceQueryModifier.cs
+++ b/RhSolutions.Api/Services/TPieceQueryModifier.cs
@@ -6,7 +6,7 @@ namespace RhSolutions.Api.Services
 {
     public class TPieceQueryModifier : IProductQueryModifier
     {
-        private readonly string pattern = @"(\b16|20|25|32|40|50|63\b)+";
+        private readonly string pattern = @"16|20|25|32|40|50|63";
 
         public bool TryQueryModify(IQueryCollection collection, out QueryString queryString)
         {