diff --git a/Builder/IISMainHandler/build.txt b/Builder/IISMainHandler/build.txt
index 0a5d03c..779ae3c 100644
--- a/Builder/IISMainHandler/build.txt
+++ b/Builder/IISMainHandler/build.txt
@@ -1 +1 @@
-2039
\ No newline at end of file
+2053
\ No newline at end of file
diff --git a/FLocal.IISHandler/MainHandler.cs b/FLocal.IISHandler/MainHandler.cs
index f66a931..ee6cb50 100644
--- a/FLocal.IISHandler/MainHandler.cs
+++ b/FLocal.IISHandler/MainHandler.cs
@@ -19,9 +19,7 @@ namespace FLocal.IISHandler {
 
 		private void doProcessRequest(HttpContext httpcontext) {
 
-			if(PatcherInfo.instance.IsNeedsPatching) {
-				throw new FLocalException("DB is outdated");
-			}
+			PatcherInfo.instance.CheckDBUpToDate();
 
 			Uri current = httpcontext.Request.Url;
 			if(!current.Host.EndsWith(Config.instance.BaseHost)) {
diff --git a/Patcher.Web/DBIsOutdatedException.cs b/Patcher.Web/DBIsOutdatedException.cs
new file mode 100644
index 0000000..b03725d
--- /dev/null
+++ b/Patcher.Web/DBIsOutdatedException.cs
@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace Patcher.Web {
+	class DBIsOutdatedException : ApplicationException {
+
+		public DBIsOutdatedException()
+			: base("DB is outdated") {
+		}
+
+	}
+}
diff --git a/Patcher.Web/Patcher.Web.csproj b/Patcher.Web/Patcher.Web.csproj
index 6a28c65..252e57c 100644
--- a/Patcher.Web/Patcher.Web.csproj
+++ b/Patcher.Web/Patcher.Web.csproj
@@ -47,6 +47,7 @@
   </ItemGroup>
   <ItemGroup>
     <Compile Include="CheckParams.cs" />
+    <Compile Include="DBIsOutdatedException.cs" />
     <Compile Include="InteractiveResponseStream.cs" />
     <Compile Include="MainHandler.cs" />
     <Compile Include="IPatcherConfiguration.cs" />
diff --git a/Patcher.Web/PatcherInfo.cs b/Patcher.Web/PatcherInfo.cs
index a142f6e..95496cb 100644
--- a/Patcher.Web/PatcherInfo.cs
+++ b/Patcher.Web/PatcherInfo.cs
@@ -23,6 +23,12 @@ namespace Patcher.Web {
 			}
 		}
 
+		public void CheckDBUpToDate() {
+			if(this.IsNeedsPatching) {
+				throw new DBIsOutdatedException();
+			}
+		}
+
 		internal void PatchesInstalled() {
 			this.AreNewPatchesInstalled = true;
 		}