diff --git a/EveryThing/Pages/Projects/Edit.cshtml.cs b/EveryThing/Pages/Projects/Edit.cshtml.cs
index d366ba5..fcd9a3d 100644
--- a/EveryThing/Pages/Projects/Edit.cshtml.cs
+++ b/EveryThing/Pages/Projects/Edit.cshtml.cs
@@ -643,12 +643,16 @@ namespace EveryThing.Pages.Projects
                                      && x.Project.IdCompanyFk == user.IdCompanyFk);
 
             if (projectPart != null)
-            {
-                foreach (var projectPartItem in _context.ProjectPartItems.Where(x => x.IdProjectPartFk == projectPart.IdProjectPart).ToList())
                 {
-                    _context.ProjectPartItems.Remove(projectPartItem);
-                }
-                _context.ProjectParts.Remove(projectPart);
+                    foreach (var projectPartItem in _context.ProjectPartItems.Where(x => x.IdProjectPartFk == projectPart.IdProjectPart).ToList())
+                    {
+                        var operations = _context.ProjectPartItemOperations
+                            .Where(x => x.IdProjectPartItemFk == projectPartItem.IdProjectPartItem)
+                            .ToList();
+                        _context.ProjectPartItemOperations.RemoveRange(operations);
+                        _context.ProjectPartItems.Remove(projectPartItem);
+                    }
+                    _context.ProjectParts.Remove(projectPart);
                 _context.SaveChanges();
 
                 projectPart.Project = null;