diff --git a/gfx/thebes/gfxDWriteFontList.cpp b/gfx/thebes/gfxDWriteFontList.cpp
index 2c0ccda75169..925f876d9984 100644
--- a/gfx/thebes/gfxDWriteFontList.cpp
+++ b/gfx/thebes/gfxDWriteFontList.cpp
@@ -1072,7 +1072,7 @@ gfxDWriteFontList::InitFontListForPlatform()
     mSystemFonts = Factory::GetDWriteSystemFonts(true);
     NS_ASSERTION(mSystemFonts != nullptr, "GetSystemFontCollection failed!");
 
-    if (FAILED(hr)) {
+    if (!mSystemFonts) {
         Telemetry::Accumulate(Telemetry::DWRITEFONT_INIT_PROBLEM,
                               uint32_t(errSystemFontCollection));
         return NS_ERROR_FAILURE;