diff --git a/src/core/SkTypeface.cpp b/src/core/SkTypeface.cpp
index 77cfa19..434d56b 100644
--- a/src/core/SkTypeface.cpp
+++ b/src/core/SkTypeface.cpp
@@ -271,6 +271,9 @@
 std::unique_ptr<SkFontData> SkTypeface::onMakeFontData() const {
     int index;
     std::unique_ptr<SkStreamAsset> stream(this->onOpenStream(&index));
+    if (!stream) {
+        return nullptr;
+    }
     return skstd::make_unique<SkFontData>(std::move(stream), index, nullptr, 0);
 };