diff --git a/src/Generator.Bind/Specifications/GL2/overrides.xml b/src/Generator.Bind/Specifications/GL2/overrides.xml
index 6ef1a428..87dbbc33 100644
--- a/src/Generator.Bind/Specifications/GL2/overrides.xml
+++ b/src/Generator.Bind/Specifications/GL2/overrides.xml
@@ -5600,6 +5600,14 @@
     </function>
   </overload>
 
+  <!--  gles2 replacements for backwards compatibility (2.0 only) -->
+  <replace name="gles2" version="2.0">
+    <!-- Khronos added count="1" to VertexAttrib1fv -->
+    <function name="VertexAttrib1fv">
+      <param name="v" legacyArrayParameter="true" />
+    </function>
+  </replace>
+
   <!--  gles2 overloads for backwards compatibility (2.0 only) -->
   <overload name="gles2" version="2.0">
     <!-- PrimtiveType <=> BeginMode overloads for backwards compatibility -->
@@ -5658,13 +5666,6 @@
       <param name="format"><type>PixelFormat</type></param>
     </function>
 
-    <!-- Khronos added count="1" to VertexAttrib1fv -->
-    <function name="VertexAttrib1fv">
-      <param name="v">
-        <count>0</count>
-      </param>
-    </function>
-
     <!-- generated by apitest -->
     <function name="FramebufferRenderbuffer" obsolete="Use FramebufferAttachment overload instead">
       <param name="attachment">
diff --git a/src/OpenTK/Graphics/ES20/ES20.cs b/src/OpenTK/Graphics/ES20/ES20.cs
index 800fffe1..84d001d5 100644
--- a/src/OpenTK/Graphics/ES20/ES20.cs
+++ b/src/OpenTK/Graphics/ES20/ES20.cs
@@ -17061,6 +17061,7 @@ namespace OpenTK.Graphics.ES20
         /// <param name="v">[length: 1]
         /// Specifies the new values to be used for the specified vertex attribute.
         /// </param>
+        [Obsolete("Use out overload instead")]
         [AutoGenerated(Category = "ES_VERSION_2_0", Version = "2.0", EntryPoint = "glVertexAttrib1fv")]
         [CLSCompliant(false)]
         public static void VertexAttrib1(Int32 index, [CountAttribute(Count = 1)] Single[] v) { throw new BindingsNotRewrittenException(); }
@@ -17087,6 +17088,7 @@ namespace OpenTK.Graphics.ES20
         /// <param name="v">[length: 1]
         /// Specifies the new values to be used for the specified vertex attribute.
         /// </param>
+        [Obsolete("Use out overload instead")]
         [AutoGenerated(Category = "ES_VERSION_2_0", Version = "2.0", EntryPoint = "glVertexAttrib1fv")]
         [CLSCompliant(false)]
         public static void VertexAttrib1(UInt32 index, [CountAttribute(Count = 1)] Single[] v) { throw new BindingsNotRewrittenException(); }