diff --git a/Content.Client/Content.Client.csproj b/Content.Client/Content.Client.csproj
index 812596a735..a63cbb59d4 100644
--- a/Content.Client/Content.Client.csproj
+++ b/Content.Client/Content.Client.csproj
@@ -60,9 +60,6 @@
     <Reference Include="System.Data" />
     <Reference Include="System.Net.Http" />
     <Reference Include="System.Xml" />
-    <Reference Include="OpenTK, Version=3.0.0.0, Culture=neutral, PublicKeyToken=bad199fe84eb3df4, processorArchitecture=MSIL">
-      <HintPath>$(SolutionDir)packages\OpenTK.3.0.0-pre\lib\net20\OpenTK.dll</HintPath>
-    </Reference>
     <Reference Include="YamlDotNet, Version=4.3.1.0, Culture=neutral, processorArchitecture=MSIL">
       <HintPath>$(SolutionDir)packages\YamlDotNet.4.3.1\lib\net45\YamlDotNet.dll</HintPath>
     </Reference>
diff --git a/Content.Client/packages.config b/Content.Client/packages.config
index 7d168b6762..1ae67f5521 100644
--- a/Content.Client/packages.config
+++ b/Content.Client/packages.config
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="OpenTK" version="3.0.0-pre" targetFramework="net451" />
   <package id="System.ValueTuple" version="4.4.0" targetFramework="net451" />
   <package id="YamlDotNet" version="4.3.1" targetFramework="net451" />
 </packages>
\ No newline at end of file
diff --git a/Content.Server/Content.Server.csproj b/Content.Server/Content.Server.csproj
index 6432c0902a..59a95cda03 100644
--- a/Content.Server/Content.Server.csproj
+++ b/Content.Server/Content.Server.csproj
@@ -56,9 +56,6 @@
     <Reference Include="System.Data" />
     <Reference Include="System.Net.Http" />
     <Reference Include="System.Xml" />
-    <Reference Include="OpenTK, Version=3.0.0.0, Culture=neutral, PublicKeyToken=bad199fe84eb3df4, processorArchitecture=MSIL">
-      <HintPath>$(SolutionDir)packages\OpenTK.3.0.0-pre\lib\net20\OpenTK.dll</HintPath>
-    </Reference>
     <Reference Include="YamlDotNet, Version=4.3.1.0, Culture=neutral, processorArchitecture=MSIL">
       <HintPath>$(SolutionDir)packages\YamlDotNet.4.3.1\lib\net45\YamlDotNet.dll</HintPath>
     </Reference>
diff --git a/Content.Server/GameObjects/Components/Damage/DamageableComponent.cs b/Content.Server/GameObjects/Components/Damage/DamageableComponent.cs
index 5d3062ca51..9a5a142cd6 100644
--- a/Content.Server/GameObjects/Components/Damage/DamageableComponent.cs
+++ b/Content.Server/GameObjects/Components/Damage/DamageableComponent.cs
@@ -1,7 +1,7 @@
 using Content.Server.Interfaces.GameObjects;
 using System;
 using System.Collections.Generic;
-using OpenTK;
+using SS14.Shared.Math;
 using SS14.Shared.GameObjects;
 using SS14.Shared.Utility;
 using YamlDotNet.RepresentationModel;
diff --git a/Content.Server/packages.config b/Content.Server/packages.config
index 7d168b6762..1ae67f5521 100644
--- a/Content.Server/packages.config
+++ b/Content.Server/packages.config
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="OpenTK" version="3.0.0-pre" targetFramework="net451" />
   <package id="System.ValueTuple" version="4.4.0" targetFramework="net451" />
   <package id="YamlDotNet" version="4.3.1" targetFramework="net451" />
 </packages>
\ No newline at end of file
diff --git a/Content.Shared/Content.Shared.csproj b/Content.Shared/Content.Shared.csproj
index db0b641216..e1bd95bf9f 100644
--- a/Content.Shared/Content.Shared.csproj
+++ b/Content.Shared/Content.Shared.csproj
@@ -55,9 +55,6 @@
     <Reference Include="System.Data" />
     <Reference Include="System.Net.Http" />
     <Reference Include="System.Xml" />
-    <Reference Include="OpenTK, Version=3.0.0.0, Culture=neutral, PublicKeyToken=bad199fe84eb3df4, processorArchitecture=MSIL">
-      <HintPath>$(SolutionDir)packages\OpenTK.3.0.0-pre\lib\net20\OpenTK.dll</HintPath>
-    </Reference>
     <Reference Include="YamlDotNet, Version=4.3.1.0, Culture=neutral, processorArchitecture=MSIL">
       <HintPath>$(SolutionDir)packages\YamlDotNet.4.3.1\lib\net45\YamlDotNet.dll</HintPath>
     </Reference>
diff --git a/Content.Shared/packages.config b/Content.Shared/packages.config
index 7d168b6762..1ae67f5521 100644
--- a/Content.Shared/packages.config
+++ b/Content.Shared/packages.config
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="OpenTK" version="3.0.0-pre" targetFramework="net451" />
   <package id="System.ValueTuple" version="4.4.0" targetFramework="net451" />
   <package id="YamlDotNet" version="4.3.1" targetFramework="net451" />
 </packages>
\ No newline at end of file