diff --git a/BTCPayServer.Data/Data/NotificationData.cs b/BTCPayServer.Data/Data/NotificationData.cs
index 81fd8f450..e1a655ca5 100644
--- a/BTCPayServer.Data/Data/NotificationData.cs
+++ b/BTCPayServer.Data/Data/NotificationData.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
@@ -9,10 +10,13 @@ namespace BTCPayServer.Data
 {
     public class NotificationData
     {
+        [MaxLength(36)]
         public string Id { get; set; }
         public DateTimeOffset Created { get; set; }
+        [MaxLength(50)]
         public string ApplicationUserId { get; set; }
         public ApplicationUser ApplicationUser { get; set; }
+        [MaxLength(100)]
         public string NotificationType { get; set; }
         public bool Seen { get; set; }
         public byte[] Blob { get; set; }
diff --git a/BTCPayServer.Data/Migrations/20200612051342_LimitingNotificationStringFields.cs b/BTCPayServer.Data/Migrations/20200612051342_LimitingNotificationStringFields.cs
new file mode 100644
index 000000000..6f519ca62
--- /dev/null
+++ b/BTCPayServer.Data/Migrations/20200612051342_LimitingNotificationStringFields.cs
@@ -0,0 +1,21 @@
+using BTCPayServer.Data;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+namespace BTCPayServer.Migrations
+{
+    [DbContext(typeof(ApplicationDbContext))]
+    [Migration("20200612051342_LimitingNotificationStringFields")]
+    public class LimitingNotificationStringFields : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+
+        }
+    }
+}
diff --git a/BTCPayServer.Data/Migrations/ApplicationDbContextModelSnapshot.cs b/BTCPayServer.Data/Migrations/ApplicationDbContextModelSnapshot.cs
index 81d8a50b2..5ae1b5f03 100644
--- a/BTCPayServer.Data/Migrations/ApplicationDbContextModelSnapshot.cs
+++ b/BTCPayServer.Data/Migrations/ApplicationDbContextModelSnapshot.cs
@@ -246,10 +246,12 @@ namespace BTCPayServer.Migrations
             modelBuilder.Entity("BTCPayServer.Data.NotificationData", b =>
                 {
                     b.Property<string>("Id")
-                        .HasColumnType("TEXT");
+                        .HasColumnType("TEXT")
+                        .HasMaxLength(36);
 
                     b.Property<string>("ApplicationUserId")
-                        .HasColumnType("TEXT");
+                        .HasColumnType("TEXT")
+                        .HasMaxLength(50);
 
                     b.Property<byte[]>("Blob")
                         .HasColumnType("BLOB");
@@ -258,7 +260,8 @@ namespace BTCPayServer.Migrations
                         .HasColumnType("TEXT");
 
                     b.Property<string>("NotificationType")
-                        .HasColumnType("TEXT");
+                        .HasColumnType("TEXT")
+                        .HasMaxLength(100);
 
                     b.Property<bool>("Seen")
                         .HasColumnType("INTEGER");