diff --git a/filament/src/Engine.cpp b/filament/src/Engine.cpp
index 5f79257566..db0a5caf4f 100644
--- a/filament/src/Engine.cpp
+++ b/filament/src/Engine.cpp
@@ -202,8 +202,8 @@ void FEngine::init() {
             .build(*this));
     static uint32_t pixel = 0;
     Texture::PixelBufferDescriptor buffer(
-            &pixel, 4, // 4 bytes in 1 RGB pixel
-            Texture::Format::RGB, Texture::Type::UBYTE);
+            &pixel, 4, // 4 bytes in 1 RGBA pixel
+            Texture::Format::RGBA, Texture::Type::UBYTE);
     Texture::FaceOffsets offsets = {};
     mDefaultIblTexture->setImage(*this, 0, std::move(buffer), offsets);