diff --git a/include/private/SkTLogic.h b/include/private/SkTLogic.h
index 542cb99dbc..8cf8c284f1 100644
--- a/include/private/SkTLogic.h
+++ b/include/private/SkTLogic.h
@@ -41,9 +41,6 @@ template <typename T> using result_of_t = typename std::result_of<T>::type;
 
 template <typename... T> using common_type_t = typename std::common_type<T...>::type;
 
-template <size_t size, typename... T> using aligned_union_t
-    = typename std::aligned_union<size, T...>::type;
-
 template <std::size_t... Ints> struct index_sequence {
     using type = index_sequence;
     using value_type = std::size_t;
diff --git a/src/gpu/text/GrTextBlob.cpp b/src/gpu/text/GrTextBlob.cpp
index 6db65fc6f5..793c848c08 100644
--- a/src/gpu/text/GrTextBlob.cpp
+++ b/src/gpu/text/GrTextBlob.cpp
@@ -223,9 +223,11 @@ sk_sp<GrTextBlob> GrTextBlob::Make(int glyphCount,
                                    GrColor color,
                                    bool forceWForDistanceFields) {
 
-    size_t vertexSize = sizeof(skstd::aligned_union_t<0, Mask2DVertex, ARGB2DVertex>);
+    static_assert(sizeof(ARGB2DVertex) <= sizeof(Mask2DVertex));
+    size_t vertexSize = sizeof(Mask2DVertex);
     if (viewMatrix.hasPerspective() || forceWForDistanceFields) {
-        vertexSize = sizeof(skstd::aligned_union_t<0, SDFT3DVertex, ARGB3DVertex>);
+        static_assert(sizeof(ARGB3DVertex) <= sizeof(SDFT3DVertex));
+        vertexSize = sizeof(SDFT3DVertex);
     }
 
     size_t quadSize = kVerticesPerGlyph * vertexSize;