diff --git a/ref/gl/gl_opengl.c b/ref/gl/gl_opengl.c
index 57c63691..95f0af82 100644
--- a/ref/gl/gl_opengl.c
+++ b/ref/gl/gl_opengl.c
@@ -720,6 +720,9 @@ void GL_InitExtensionsGLES( void )
 		case GL_ARB_VERTEX_ARRAY_OBJECT_EXT:
 			GL_CheckExtension( "vertex_array_object", vaofuncs, "gl_vertex_array_object", extid );
 			break;
+		case GL_DRAW_RANGEELEMENTS_EXT:
+			GL_CheckExtension( "draw_range_elements", drawrangeelementsfuncs, "gl_drawrangeelements", extid );
+			break;
 #endif
 		case GL_DEBUG_OUTPUT:
 			if( glw_state.extended )
diff --git a/ref/gl/gl_studio.c b/ref/gl/gl_studio.c
index 2fe5aafd..ebeece6f 100644
--- a/ref/gl/gl_studio.c
+++ b/ref/gl/gl_studio.c
@@ -146,8 +146,6 @@ R_StudioInit
 */
 void R_StudioInit( void )
 {
-	gEngfuncs.Cvar_RegisterVariable( &r_studio_sort_textures );
-	gEngfuncs.Cvar_RegisterVariable( &r_studio_drawelements );
 
 #if XASH_PSVITA
 	// don't do the same array-building work twice since that's what our FFP shim does anyway