diff --git a/src/Context.cpp b/src/Context.cpp
index 46d1a623d..1318757f7 100644
--- a/src/Context.cpp
+++ b/src/Context.cpp
@@ -225,6 +225,7 @@ const std::vector<Extension>& Extension::extensions(Version version) {
         _extension(GL,NV,read_depth),
         _extension(GL,NV,read_depth_stencil),
         _extension(GL,OES,depth24),
+        _extension(GL,OES,element_index_uint),
         _extension(GL,OES,rgb8_rgba8),
         _extension(GL,OES,texture_half_float_linear),
         _extension(GL,OES,texture_float_linear),
diff --git a/src/Extensions.h b/src/Extensions.h
index abca47d91..3458a3e3b 100644
--- a/src/Extensions.h
+++ b/src/Extensions.h
@@ -207,6 +207,7 @@ namespace GL {
     } namespace OES {
         _extension(GL,OES,depth24,                  GLES200, GLES300) // #24
         _extension(GL,OES,depth32,                  GLES200,    None) // #25
+        _extension(GL,OES,element_index_uint,       GLES200, GLES300) // #26
         _extension(GL,OES,mapbuffer,                GLES200,    None) // #29
         _extension(GL,OES,rgb8_rgba8,               GLES200, GLES300) // #30
         _extension(GL,OES,stencil1,                 GLES200,    None) // #31