diff --git a/Persistence/EntityTypeConfigurations/Schedule/LectureHallConfiguration.cs b/Persistence/EntityTypeConfigurations/Schedule/LectureHallConfiguration.cs
index 592baa3..2d10805 100644
--- a/Persistence/EntityTypeConfigurations/Schedule/LectureHallConfiguration.cs
+++ b/Persistence/EntityTypeConfigurations/Schedule/LectureHallConfiguration.cs
@@ -20,6 +20,6 @@ public class LectureHallConfiguration : IEntityTypeConfiguration<LectureHall>
             .HasOne(l => l.Campus)
             .WithMany(c => c.LectureHalls)
             .HasForeignKey(d => d.CampusId)
-            .OnDelete(DeleteBehavior.Cascade);
+            .OnDelete(DeleteBehavior.Restrict);
     }
 }
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