--- a/dom/canvas/CanvasRenderingContext2D.cpp
+++ b/dom/canvas/CanvasRenderingContext2D.cpp
@@ -1591,17 +1591,17 @@ CanvasRenderingContext2D::EnsureTarget(c
 
         if (glue && glue->GetGrContext() && glue->GetGLContext()) {
           mTarget = Factory::CreateDrawTargetSkiaWithGrContext(glue->GetGrContext(), size, format);
           if (mTarget) {
             AddDemotableContext(this);
             mBufferProvider = new PersistentBufferProviderBasic(mTarget);
             mIsSkiaGL = true;
           } else {
-            gfxCriticalNote << "Failed to create a SkiaGL DrawTarget, falling back to software\n";
+            gfxCriticalNote << "Failed to create a SkiaGL DrawTarget, falling back to software " << size << ", " << format;
             mode = RenderingMode::SoftwareBackendMode;
           }
         }
 #endif
       }
 
       if (!mBufferProvider) {
         mTarget = nullptr;