diff --git a/AsbCloudInfrastructure/Services/DrillingProgramService.cs b/AsbCloudInfrastructure/Services/DrillingProgramService.cs
index b8ccae5b..2594fbcd 100644
--- a/AsbCloudInfrastructure/Services/DrillingProgramService.cs
+++ b/AsbCloudInfrastructure/Services/DrillingProgramService.cs
@@ -16,10 +16,10 @@ namespace AsbCloudInfrastructure.Services
     public class DrillingProgramService : IDrillingProgramService
     {
         private readonly IFileService fileService;
-        private readonly WellService wellService;
+        private readonly IWellService wellService;
         private const int idFileCategoryPlan = 13;
 
-        public DrillingProgramService(IFileService fileService, WellService wellService)
+        public DrillingProgramService(IFileService fileService, IWellService wellService)
         {
             this.fileService = fileService;
             this.wellService = wellService;