diff --git a/gfx/sfntly/cpp/src/sample/subtly/utils.cc b/gfx/sfntly/cpp/src/sample/subtly/utils.cc
index 3c204d381460..15efb7a5d4e2 100644
--- a/gfx/sfntly/cpp/src/sample/subtly/utils.cc
+++ b/gfx/sfntly/cpp/src/sample/subtly/utils.cc
@@ -79,7 +79,7 @@ bool SerializeFont(const char* font_path, FontFactory* factory, Font* font) {
 #else
   output_file = fopen(font_path, "wb");
 #endif
-  if (output_file == reinterpret_cast<FILE*>(NULL))
+  if (output_file == static_cast<FILE*>(NULL))
     return false;
   for (size_t i = 0; i < output_stream.Size(); ++i) {
     fwrite(&(output_stream.Get()[i]), 1, 1, output_file);
diff --git a/gfx/sfntly/cpp/src/sfntly/table/core/cmap_table.cc b/gfx/sfntly/cpp/src/sfntly/table/core/cmap_table.cc
index 1c83d2e7d0e0..b1eb98ee7978 100644
--- a/gfx/sfntly/cpp/src/sfntly/table/core/cmap_table.cc
+++ b/gfx/sfntly/cpp/src/sfntly/table/core/cmap_table.cc
@@ -439,7 +439,7 @@ CMapTable::CMapFormat0::Builder::Builder(
 }
 
 CMapTable::CMapFormat0::Builder::Builder(const CMapId& cmap_id)
-    : CMap::Builder(reinterpret_cast<ReadableFontData*>(NULL),
+    : CMap::Builder(static_cast<ReadableFontData*>(NULL),
                     CMapFormat::kFormat0,
                     cmap_id) {
 }
@@ -563,7 +563,7 @@ CMapTable::CMapFormat2::Builder::Builder(WritableFontData* data,
     : CMapTable::CMap::Builder(data ? down_cast<WritableFontData*>(
                                    data->Slice(offset, data->ReadUShort(
                                        offset + Offset::kFormat0Length)))
-                               : reinterpret_cast<WritableFontData*>(NULL),
+                               : static_cast<WritableFontData*>(NULL),
                                CMapFormat::kFormat2, cmap_id) {
   // TODO(arthurhsu): FIXIT: heavy lifting and leak, need fix.
 }
@@ -574,7 +574,7 @@ CMapTable::CMapFormat2::Builder::Builder(ReadableFontData* data,
     : CMapTable::CMap::Builder(data ? down_cast<ReadableFontData*>(
                                    data->Slice(offset, data->ReadUShort(
                                        offset + Offset::kFormat0Length)))
-                               : reinterpret_cast<ReadableFontData*>(NULL),
+                               : static_cast<ReadableFontData*>(NULL),
                                CMapFormat::kFormat2, cmap_id) {
   // TODO(arthurhsu): FIXIT: heavy lifting and leak, need fix.
 }
@@ -958,7 +958,7 @@ CMapTable::CMapFormat4::Builder::Builder(WritableFontData* data, int32_t offset,
 CMapTable::CMapFormat4::Builder::Builder(SegmentList* segments,
                                          IntegerList* glyph_id_array,
                                          const CMapId& cmap_id)
-    : CMap::Builder(reinterpret_cast<ReadableFontData*>(NULL),
+    : CMap::Builder(static_cast<ReadableFontData*>(NULL),
                     CMapFormat::kFormat4, cmap_id),
       segments_(segments->begin(), segments->end()),
       glyph_id_array_(glyph_id_array->begin(), glyph_id_array->end()) {
@@ -966,7 +966,7 @@ CMapTable::CMapFormat4::Builder::Builder(SegmentList* segments,
 }
 
 CMapTable::CMapFormat4::Builder::Builder(const CMapId& cmap_id)
-    : CMap::Builder(reinterpret_cast<ReadableFontData*>(NULL),
+    : CMap::Builder(static_cast<ReadableFontData*>(NULL),
                     CMapFormat::kFormat4, cmap_id) {
 }
 
diff --git a/gfx/sfntly/cpp/src/test/autogenerated/cmap_basic_test.cc b/gfx/sfntly/cpp/src/test/autogenerated/cmap_basic_test.cc
index aae35e1c139f..083b27fa9dd5 100644
--- a/gfx/sfntly/cpp/src/test/autogenerated/cmap_basic_test.cc
+++ b/gfx/sfntly/cpp/src/test/autogenerated/cmap_basic_test.cc
@@ -67,11 +67,11 @@ void CMapBasicTests::SetUp() {
   LoadFont(font_name.c_str(), font_factory, &font_array);
   ASSERT_FALSE(font_array.empty());
   Ptr<Font> font = font_array.at(0);
-  ASSERT_NE(font, reinterpret_cast<Font*>(NULL));
+  ASSERT_NE(font, static_cast<Font*>(NULL));
   cmap_table_ = down_cast<CMapTable*>(font->GetTable(Tag::cmap));
   if (!cmap_table_)
     fprintf(stderr, "No CMap: %s\n", font_name.c_str());
-  ASSERT_NE(cmap_table_, reinterpret_cast<CMapTable*>(NULL));
+  ASSERT_NE(cmap_table_, static_cast<CMapTable*>(NULL));
 
   // Loading the XML file
   document_ = TiXmlDocument((font_name + ".xml").c_str());
@@ -85,7 +85,7 @@ TEST_P(CMapBasicTests, BasicTest) {
   TiXmlNodeVector* cmaps = GetNodesWithName(cmap_table->at(0), "cmap");
   const TiXmlAttribute* num_cmaps_attr = GetAttribute(cmap_table->at(0),
                                                       "num_cmaps");
-  ASSERT_NE(num_cmaps_attr, reinterpret_cast<TiXmlAttribute*>(NULL));
+  ASSERT_NE(num_cmaps_attr, static_cast<TiXmlAttribute*>(NULL));
   // But there may be more than one CMap in this table
   ASSERT_LE(cmaps->size(), (size_t)num_cmaps_attr->IntValue());
   for (TiXmlNodeVector::iterator it = cmaps->begin();
diff --git a/gfx/sfntly/cpp/src/test/cmap_editing_test.cc b/gfx/sfntly/cpp/src/test/cmap_editing_test.cc
index 6df272085ddd..299b60762559 100644
--- a/gfx/sfntly/cpp/src/test/cmap_editing_test.cc
+++ b/gfx/sfntly/cpp/src/test/cmap_editing_test.cc
@@ -41,7 +41,7 @@ TEST(CMapEditingTest, RemoveAllButOneCMap) {
   FontBuilderPtr font_builder = builders[0];
   Ptr<CMapTable::Builder> cmap_table_builder =
       (CMapTable::Builder*)font_builder->GetTableBuilder(Tag::cmap);
-  ASSERT_NE(cmap_table_builder, reinterpret_cast<CMapTable::Builder*>(NULL));
+  ASSERT_NE(cmap_table_builder, static_cast<CMapTable::Builder*>(NULL));
   CMapTable::CMapBuilderMap*
       cmap_builders = cmap_table_builder->GetCMapBuilders();
   ASSERT_FALSE(cmap_builders->empty());
@@ -95,7 +95,7 @@ TEST(CMapEditingTest, CopyAllCMapsToNewFont) {
   ASSERT_EQ(cmap_table->NumCMaps(), new_cmap_table->NumCMaps());
   CMapTable::CMapPtr cmap;
   cmap.Attach(cmap_table->GetCMap(CMapTable::WINDOWS_BMP));
-  ASSERT_NE(cmap, reinterpret_cast<CMapTable::CMap*>(NULL));
+  ASSERT_NE(cmap, static_cast<CMapTable::CMap*>(NULL));
   ASSERT_EQ(CMapTable::WINDOWS_BMP, cmap->cmap_id());
 }
 }
diff --git a/gfx/sfntly/cpp/src/test/cmap_iterator_test.cc b/gfx/sfntly/cpp/src/test/cmap_iterator_test.cc
index 2e8e6fedf98e..e01a301628f1 100644
--- a/gfx/sfntly/cpp/src/test/cmap_iterator_test.cc
+++ b/gfx/sfntly/cpp/src/test/cmap_iterator_test.cc
@@ -132,7 +132,7 @@ TEST_P(CMapIteratorTests, IteratorTest) {
   CMapTable::CMap::CharacterIterator* character_iterator = NULL;
   character_iterator = cmap_->Iterator();
   EXPECT_NE(character_iterator,
-            reinterpret_cast<CMapTable::CMap::CharacterIterator*>(NULL));
+            static_cast<CMapTable::CMap::CharacterIterator*>(NULL));
   CompareCMapIterAndBitSet(character_iterator, bit_set);
   delete character_iterator;
   delete bit_set;
diff --git a/gfx/sfntly/cpp/src/test/cmap_test.cc b/gfx/sfntly/cpp/src/test/cmap_test.cc
index 02bf8a26c960..5961f1cea322 100644
--- a/gfx/sfntly/cpp/src/test/cmap_test.cc
+++ b/gfx/sfntly/cpp/src/test/cmap_test.cc
@@ -115,19 +115,19 @@ class CMapTests : public :: testing::TestWithParam<CMapTestCase> {
 }
 
 void CMapTests::CommonSetUp(FontArray* font_array) {
-  ASSERT_NE(font_array, reinterpret_cast<FontArray*>(NULL));
+  ASSERT_NE(font_array, static_cast<FontArray*>(NULL));
   ASSERT_FALSE(font_array->empty());
   Ptr<Font> font;
   font = font_array->at(0);
-  ASSERT_NE(font, reinterpret_cast<Font*>(NULL));
+  ASSERT_NE(font, static_cast<Font*>(NULL));
   Ptr<CMapTable> cmap_table =
       down_cast<CMapTable*>(font->GetTable(Tag::cmap));
   cmap1_.Attach(cmap_table->GetCMap(GetParam().first_platform_id(),
                                     GetParam().first_encoding_id()));
-  ASSERT_NE((cmap1_), reinterpret_cast<CMapTable::CMap*>(NULL));
+  ASSERT_NE((cmap1_), static_cast<CMapTable::CMap*>(NULL));
   cmap2_.Attach(cmap_table->GetCMap(GetParam().second_platform_id(),
                                     GetParam().second_encoding_id()));
-  ASSERT_NE((cmap2_), reinterpret_cast<CMapTable::CMap*>(NULL));
+  ASSERT_NE((cmap2_), static_cast<CMapTable::CMap*>(NULL));
   encoder1_ = TestUtils::GetEncoder(GetParam().first_charset_name());
   encoder2_ = TestUtils::GetEncoder(GetParam().second_charset_name());
   successful_setup_ = true;
diff --git a/gfx/sfntly/cpp/src/test/test_font_utils.cc b/gfx/sfntly/cpp/src/test/test_font_utils.cc
index d59b52b52f73..a00a811d6c0b 100644
--- a/gfx/sfntly/cpp/src/test/test_font_utils.cc
+++ b/gfx/sfntly/cpp/src/test/test_font_utils.cc
@@ -70,7 +70,7 @@ void LoadFile(const char* input_file_path, ByteVector* input_buffer) {
 #else
   input_file = fopen(input_file_path, "rb");
 #endif
-  EXPECT_NE(input_file, reinterpret_cast<FILE*>(NULL));
+  EXPECT_NE(input_file, static_cast<FILE*>(NULL));
   fseek(input_file, 0, SEEK_END);
   size_t file_size = ftell(input_file);
   fseek(input_file, 0, SEEK_SET);
@@ -90,7 +90,7 @@ void SerializeToFile(MemoryOutputStream* output_stream, const char* file_path) {
 #else
   output_file = fopen(file_path, "wb");
 #endif
-  EXPECT_NE(output_file, reinterpret_cast<FILE*>(NULL));
+  EXPECT_NE(output_file, static_cast<FILE*>(NULL));
   fwrite(output_stream->Get(), 1, output_stream->Size(), output_file);
   fflush(output_file);
   fclose(output_file);