diff --git a/libs/filagui/src/ImGuiHelper.cpp b/libs/filagui/src/ImGuiHelper.cpp
index 8cbe095268..76a2177bb2 100644
--- a/libs/filagui/src/ImGuiHelper.cpp
+++ b/libs/filagui/src/ImGuiHelper.cpp
@@ -76,7 +76,7 @@ void ImGuiHelper::createAtlasTexture(Engine* engine) {
     static unsigned char* pixels;
     int width, height;
     io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);
-    size_t size = (size_t) (width * height);
+    size_t size = (size_t) (width * height * 4);
     Texture::PixelBufferDescriptor pb(
             pixels, size,
             Texture::Format::RGBA, Texture::Type::UBYTE);