diff --git a/src/libGLESv2/renderer/Renderer11.cpp b/src/libGLESv2/renderer/Renderer11.cpp
index aab13ca..88af239 100644
--- a/src/libGLESv2/renderer/Renderer11.cpp
+++ b/src/libGLESv2/renderer/Renderer11.cpp
@@ -965,8 +965,9 @@
     if (type != GL_NONE && elementArrayBuffer)
     {
         gl::Buffer *indexBuffer = elementArrayBuffer;
+        BufferStorage *storage = indexBuffer->getStorage();
         intptr_t offset = reinterpret_cast<intptr_t>(indices);
-        indices = static_cast<const GLubyte*>(indexBuffer->data()) + offset;
+        indices = static_cast<const GLubyte*>(storage->getData()) + offset;
     }
 
     if (!mLineLoopIB)
@@ -1057,8 +1058,9 @@
     if (type != GL_NONE && elementArrayBuffer)
     {
         gl::Buffer *indexBuffer = elementArrayBuffer;
+        BufferStorage *storage = indexBuffer->getStorage();
         intptr_t offset = reinterpret_cast<intptr_t>(indices);
-        indices = static_cast<const GLubyte*>(indexBuffer->data()) + offset;
+        indices = static_cast<const GLubyte*>(storage->getData()) + offset;
     }
 
     if (!mTriangleFanIB)