diff --git a/src/NzbDrone.Core.Test/NzbDrone.Core.Test.csproj b/src/NzbDrone.Core.Test/NzbDrone.Core.Test.csproj
index 5832ba9a4..c7085eb48 100644
--- a/src/NzbDrone.Core.Test/NzbDrone.Core.Test.csproj
+++ b/src/NzbDrone.Core.Test/NzbDrone.Core.Test.csproj
@@ -98,6 +98,7 @@
     <Reference Include="System" />
     <Reference Include="System.Data" />
     <Reference Include="System.Drawing" />
+    <Reference Include="System.Numerics" />
     <Reference Include="System.Xml" />
     <Reference Include="System.Xml.Linq" />
     <Reference Include="Microsoft.CSharp" />
diff --git a/src/NzbDrone.Core/Download/Clients/QBittorrent/QBittorrent.cs b/src/NzbDrone.Core/Download/Clients/QBittorrent/QBittorrent.cs
index 56ff9f315..664809cdc 100644
--- a/src/NzbDrone.Core/Download/Clients/QBittorrent/QBittorrent.cs
+++ b/src/NzbDrone.Core/Download/Clients/QBittorrent/QBittorrent.cs
@@ -107,7 +107,7 @@ public override IEnumerable<DownloadClientItem> GetItems()
                 item.TotalSize = torrent.Size;
                 item.DownloadClient = Definition.Name;
                 item.RemainingSize = (long)(torrent.Size * (1.0 - torrent.Progress));
-                item.RemainingTime = TimeSpan.FromSeconds(torrent.Eta);
+                item.RemainingTime = GetRemainingTime(torrent);
 
                 item.OutputPath = _remotePathMappingService.RemapRemoteToLocal(Settings.Host, new OsPath(torrent.SavePath));
 
@@ -333,5 +333,15 @@ private void SetInitialState(string hash)
                 _logger.Warn(ex, "Failed to set inital state for {0}.", hash);
             }
         }
+
+        protected TimeSpan? GetRemainingTime(QBittorrentTorrent torrent)
+        {
+            if (torrent.Eta < 0 || torrent.Eta > 365 * 24 * 3600)
+            {
+                return null;
+            }
+
+            return TimeSpan.FromSeconds((int)torrent.Eta);
+        }
     }
 }
diff --git a/src/NzbDrone.Core/Download/Clients/QBittorrent/QBittorrentTorrent.cs b/src/NzbDrone.Core/Download/Clients/QBittorrent/QBittorrentTorrent.cs
index 266d22f95..d5fa0b5e7 100644
--- a/src/NzbDrone.Core/Download/Clients/QBittorrent/QBittorrentTorrent.cs
+++ b/src/NzbDrone.Core/Download/Clients/QBittorrent/QBittorrentTorrent.cs
@@ -1,4 +1,5 @@
-using Newtonsoft.Json;
+using System.Numerics;
+using Newtonsoft.Json;
 
 namespace NzbDrone.Core.Download.Clients.QBittorrent
 {
@@ -13,7 +14,7 @@ public class QBittorrentTorrent
 
         public double Progress { get; set; } // Torrent progress (%/100)
 
-        public ulong Eta { get; set; } // Torrent ETA (seconds)
+        public BigInteger Eta { get; set; } // Torrent ETA (seconds) (QBit contains a bug exceeding ulong limits)
 
         public string State { get; set; } // Torrent state. See possible values here below
 
diff --git a/src/NzbDrone.Core/NzbDrone.Core.csproj b/src/NzbDrone.Core/NzbDrone.Core.csproj
index 555710344..e278fa376 100644
--- a/src/NzbDrone.Core/NzbDrone.Core.csproj
+++ b/src/NzbDrone.Core/NzbDrone.Core.csproj
@@ -98,6 +98,7 @@
     <Reference Include="System.Core" />
     <Reference Include="System.Data" />
     <Reference Include="System.Drawing" />
+    <Reference Include="System.Numerics" />
     <Reference Include="System.Web" />
     <Reference Include="System.Web.Extensions" />
     <Reference Include="System.Windows.Forms" />