diff --git a/Kerbal_Construction_Time/KerbalConstructionTime.csproj b/Kerbal_Construction_Time/KerbalConstructionTime.csproj
index 53773ba..ed18f85 100644
--- a/Kerbal_Construction_Time/KerbalConstructionTime.csproj
+++ b/Kerbal_Construction_Time/KerbalConstructionTime.csproj
@@ -54,6 +54,9 @@
     <Reference Include="UnityEngine">
       <HintPath>D:\SteamLibrary\SteamApps\common\Kerbal Space Program\KSP_Data\Managed\UnityEngine.dll</HintPath>
     </Reference>
+    <Reference Include="UnityEngine.UI">
+      <HintPath>D:\SteamLibrary\SteamApps\common\Kerbal Space Program\KSP_Data\Managed\UnityEngine.UI.dll</HintPath>
+    </Reference>
   </ItemGroup>
   <ItemGroup>
     <Compile Include="CrewQAPI.cs" />