diff --git a/binding/csharp/IP2Region.Net.BenchMark/IP2Region.Net.BenchMark.csproj b/binding/csharp/IP2Region.Net.BenchMark/IP2Region.Net.BenchMark.csproj
index 7acf40f..6a25b56 100644
--- a/binding/csharp/IP2Region.Net.BenchMark/IP2Region.Net.BenchMark.csproj
+++ b/binding/csharp/IP2Region.Net.BenchMark/IP2Region.Net.BenchMark.csproj
@@ -18,7 +18,7 @@
 
     <ItemGroup>
       <Content Include="..\..\..\data\ip2region_v4.xdb">
-        <Link>IP2Region/ip2region.xdb</Link>
+        <Link>IP2Region/ip2region_v4.xdb</Link>
         <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
       </Content>
     </ItemGroup>