diff --git a/Source/OpenTK/Platform/Egl/EglUnixContext.cs b/Source/OpenTK/Platform/Egl/EglUnixContext.cs
index 94eb2e43..d2f82008 100644
--- a/Source/OpenTK/Platform/Egl/EglUnixContext.cs
+++ b/Source/OpenTK/Platform/Egl/EglUnixContext.cs
@@ -53,14 +53,14 @@ namespace OpenTK.Platform.Egl
 
         protected override IntPtr GetStaticAddress(IntPtr function, RenderableFlags renderable)
         {
-            if ((renderable & RenderableFlags.ES) != 0 && ES1 != IntPtr.Zero)
-            {
-                return X11.DL.Symbol(ES1, function);
-            }
-            else if ((renderable & RenderableFlags.ES2) != 0 && ES2 != IntPtr.Zero)
+            if ((renderable & (RenderableFlags.ES2 | RenderableFlags.ES3)) != 0 && ES2 != IntPtr.Zero)
             {
                 return X11.DL.Symbol(ES2, function);
             }
+            else if ((renderable & RenderableFlags.ES) != 0 && ES1 != IntPtr.Zero)
+            {
+                return X11.DL.Symbol(ES1, function);
+            }
             else if ((renderable & RenderableFlags.GL) != 0 && GL != IntPtr.Zero)
             {
                 return X11.DL.Symbol(GL, function);
diff --git a/Source/OpenTK/Platform/Egl/EglWinContext.cs b/Source/OpenTK/Platform/Egl/EglWinContext.cs
index 9c6ee616..86d736cf 100644
--- a/Source/OpenTK/Platform/Egl/EglWinContext.cs
+++ b/Source/OpenTK/Platform/Egl/EglWinContext.cs
@@ -34,8 +34,8 @@ namespace OpenTK.Platform.Egl
 {
     class EglWinContext : EglContext
     {
-        readonly IntPtr ES1 = OpenTK.Platform.Windows.Functions.LoadLibrary("libGLESv1_CM");
-        readonly IntPtr ES2 = OpenTK.Platform.Windows.Functions.LoadLibrary("libGLESv2");
+        IntPtr ES1 = OpenTK.Platform.Windows.Functions.LoadLibrary("libGLESv1_CM");
+        IntPtr ES2 = OpenTK.Platform.Windows.Functions.LoadLibrary("libGLESv2");
 
         public EglWinContext(GraphicsMode mode, EglWindowInfo window, IGraphicsContext sharedContext,
             int major, int minor, GraphicsContextFlags flags)
@@ -53,14 +53,14 @@ namespace OpenTK.Platform.Egl
 
         protected override IntPtr GetStaticAddress(IntPtr function, RenderableFlags renderable)
         {
-            if ((renderable & RenderableFlags.ES) != 0 && ES1 != IntPtr.Zero)
-            {
-                return Windows.Functions.GetProcAddress(ES1, function);
-            }
-            else if ((renderable & RenderableFlags.ES2) != 0 && ES2 != IntPtr.Zero)
+            if ((renderable & (RenderableFlags.ES2 | RenderableFlags.ES3)) != 0 && ES2 != IntPtr.Zero)
             {
                 return Windows.Functions.GetProcAddress(ES2, function);
             }
+            else if ((renderable & RenderableFlags.ES) != 0 && ES1 != IntPtr.Zero)
+            {
+                return Windows.Functions.GetProcAddress(ES1, function);
+            }
             return IntPtr.Zero;
         }
 
@@ -75,6 +75,8 @@ namespace OpenTK.Platform.Egl
                 Windows.Functions.FreeLibrary(ES2);
             }
 
+            ES1 = ES2 = IntPtr.Zero;
+
             base.Dispose(manual);
         }