diff --git a/shell/platform/windows/external_texture_d3d.cc b/shell/platform/windows/external_texture_d3d.cc
index 7a4e0e2d45af3..dfd4d1979daf4 100644
--- a/shell/platform/windows/external_texture_d3d.cc
+++ b/shell/platform/windows/external_texture_d3d.cc
@@ -45,7 +45,7 @@ bool ExternalTextureD3d::PopulateTexture(size_t width,
   // Populate the texture object used by the engine.
   opengl_texture->target = GL_TEXTURE_2D;
   opengl_texture->name = gl_texture_;
-  opengl_texture->format = GL_RGBA;
+  opengl_texture->format = GL_RGBA8_OES;
   opengl_texture->destruction_callback = nullptr;
   opengl_texture->user_data = nullptr;
   opengl_texture->width = SAFE_ACCESS(descriptor, visible_width, 0);
diff --git a/shell/platform/windows/external_texture_pixelbuffer.cc b/shell/platform/windows/external_texture_pixelbuffer.cc
index 2ead76a0ac430..4dae259500b08 100644
--- a/shell/platform/windows/external_texture_pixelbuffer.cc
+++ b/shell/platform/windows/external_texture_pixelbuffer.cc
@@ -36,7 +36,7 @@ bool ExternalTexturePixelBuffer::PopulateTexture(
   // Populate the texture object used by the engine.
   opengl_texture->target = GL_TEXTURE_2D;
   opengl_texture->name = state_->gl_texture;
-  opengl_texture->format = GL_RGBA;
+  opengl_texture->format = GL_RGBA8_OES;
   opengl_texture->destruction_callback = nullptr;
   opengl_texture->user_data = nullptr;
   opengl_texture->width = width;