--- a/gfx/2d/SourceSurfaceCairo.cpp
+++ b/gfx/2d/SourceSurfaceCairo.cpp
@@ -17,16 +17,18 @@ static SurfaceFormat
 CairoFormatToSurfaceFormat(cairo_format_t format)
 {
   switch (format)
   {
     case CAIRO_FORMAT_ARGB32:
       return SurfaceFormat::B8G8R8A8;
     case CAIRO_FORMAT_RGB24:
       return SurfaceFormat::B8G8R8X8;
+    case CAIRO_FORMAT_RGB16_565:
+      return SurfaceFormat::R5G6B5_UINT16;
     case CAIRO_FORMAT_A8:
       return SurfaceFormat::A8;
     default:
       return SurfaceFormat::B8G8R8A8;
   }
 }
 
 SourceSurfaceCairo::SourceSurfaceCairo(cairo_surface_t* aSurface,