diff --git a/Directory.Build.targets b/Directory.Build.targets
index 86b78f885..f4a55905d 100644
--- a/Directory.Build.targets
+++ b/Directory.Build.targets
@@ -1,44 +1,52 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project>
-
-  <Target Name="GetGitVersion" BeforeTargets="PrepareForBuild" Condition="'$(GetGitVersionSet)'!='true'">
-    <Exec Command="git rev-parse HEAD" ConsoleToMsBuild="true"  StandardOutputImportance="Low" EchoOff="true">
-      <Output TaskParameter="ConsoleOutput" PropertyName="GitRevision" />
-    </Exec>
-    <Exec Command="git rev-parse --short HEAD" ConsoleToMsBuild="true"  StandardOutputImportance="Low" EchoOff="true">
-      <Output TaskParameter="ConsoleOutput" PropertyName="GitRevisionShort" />
-    </Exec>
-    <Exec Command="git rev-list --count HEAD" ConsoleToMsBuild="true"  StandardOutputImportance="Low" EchoOff="true">
-      <Output TaskParameter="ConsoleOutput" PropertyName="GitRevisionCount" />
-    </Exec>
-    <!-- TODO: Remove -->
-    <Message Importance="High" Text="git rev:       [$(GitRevision)]" />
-    <Message Importance="High" Text="git rev short: [$(GitRevisionShort)]" />
-    <Message Importance="High" Text="git rev count: [$(GitRevisionCount)]" />
-    <PropertyGroup>
-      <!-- Call only once per MSBuild invocation. -->
-      <GetGitVersionSet>true</GetGitVersionSet>
-    </PropertyGroup>
-    <ItemGroup>
-      <ClCompile>
-        <PreprocessorDefinitions>
-          %(PreprocessorDefinitions);
-          GIT_REVISION=$(GitRevision);
-          GIT_REVISION_SHORT=$(GitRevisionShort);
-          VERSION_BUILD=$(GitRevisionCount);
-          VERSION_BUILD_YEAR=$([System.DateTime]::Now.ToString(`yyyy`))
-       </PreprocessorDefinitions>
-      </ClCompile>
-      <ResourceCompile>
-        <PreprocessorDefinitions>
-          %(PreprocessorDefinitions);
-          GIT_REVISION=$(GitRevision);
-          GIT_REVISION_SHORT=$(GitRevisionShort);
-          VERSION_BUILD=$(GitRevisionCount);
-          VERSION_BUILD_YEAR=$([System.DateTime]::Now.ToString(`yyyy`))
-       </PreprocessorDefinitions>
-      </ResourceCompile>
-    </ItemGroup>
-  </Target>
-
+<?xml version="1.0" encoding="utf-8"?>
+<Project>
+
+  <Target Name="GetGitVersion" BeforeTargets="PrepareForBuild" Condition="'$(GetGitVersionSet)'!='true'">
+    <Exec Command="git rev-parse HEAD" ConsoleToMsBuild="true"  StandardOutputImportance="Low" EchoOff="true">
+      <Output TaskParameter="ConsoleOutput" PropertyName="GitRevision" />
+    </Exec>
+    <Exec Command="git rev-parse --short HEAD" ConsoleToMsBuild="true"  StandardOutputImportance="Low" EchoOff="true">
+      <Output TaskParameter="ConsoleOutput" PropertyName="GitRevisionShort" />
+    </Exec>
+    <Exec Command="git rev-list --count HEAD" ConsoleToMsBuild="true"  StandardOutputImportance="Low" EchoOff="true">
+      <Output TaskParameter="ConsoleOutput" PropertyName="GitRevisionCount" />
+    </Exec>
+    <Exec Command="git diff --stat" ConsoleToMsBuild="true"  StandardOutputImportance="Low" EchoOff="true">
+      <Output TaskParameter="ConsoleOutput" PropertyName="GitIsDirty" />
+    </Exec>
+    <PropertyGroup>
+      <!-- Call only once per MSBuild invocation. -->
+      <GetGitVersionSet>true</GetGitVersionSet>
+      <GitVersion>$(GitRevisionShort)</GitVersion>
+      <GitVersion Condition="'$(GitIsDirty)'!=''">$(GitRevisionShort)-Dirty</GitVersion>
+    </PropertyGroup>
+    <!-- TODO: Remove -->
+    <Message Importance="High" Text="git rev:       [$(GitRevision)]" />
+    <Message Importance="High" Text="git rev short: [$(GitRevisionShort)]" />
+    <Message Importance="High" Text="git rev count: [$(GitRevisionCount)]" />
+    <Message Importance="High" Text="git dirty?:    [Dirty]" Condition="'$(GitIsDirty)'!=''" />
+    <Message Importance="High" Text="git dirty?:    []" Condition="'$(GitIsDirty)'==''" />
+    <Message Importance="High" Text="GitVersion:    [$(GitVersion)]" />
+    <ItemGroup>
+      <ClCompile>
+        <PreprocessorDefinitions>
+          %(PreprocessorDefinitions);
+          GIT_REVISION=$(GitRevision);
+          GIT_REVISION_SHORT=$(GitRevisionShort);
+          VERSION_BUILD=$(GitRevisionCount);
+          VERSION_BUILD_YEAR=$([System.DateTime]::Now.ToString(`yyyy`))
+       </PreprocessorDefinitions>
+      </ClCompile>
+      <ResourceCompile>
+        <PreprocessorDefinitions>
+          %(PreprocessorDefinitions);
+          GIT_REVISION=$(GitRevision);
+          GIT_REVISION_SHORT=$(GitRevisionShort);
+          VERSION_BUILD=$(GitRevisionCount);
+          VERSION_BUILD_YEAR=$([System.DateTime]::Now.ToString(`yyyy`))
+       </PreprocessorDefinitions>
+      </ResourceCompile>
+    </ItemGroup>
+  </Target>
+
 </Project>
\ No newline at end of file