diff --git a/fpdfsdk/fpdfedit_embeddertest.cpp b/fpdfsdk/fpdfedit_embeddertest.cpp
index 9f43054..1fb0cde 100644
--- a/fpdfsdk/fpdfedit_embeddertest.cpp
+++ b/fpdfsdk/fpdfedit_embeddertest.cpp
@@ -82,6 +82,10 @@
     // Check that the font stream is the one that was provided
     CPDF_Stream* font_stream = font_desc->GetStreamFor(present);
     ASSERT_EQ(size, font_stream->GetRawSize());
+    if (font_type == FPDF_FONT_TRUETYPE) {
+      ASSERT_EQ(static_cast<int>(size),
+                font_stream->GetDict()->GetIntegerFor("Length1"));
+    }
     uint8_t* stream_data = font_stream->GetRawData();
     for (size_t j = 0; j < size; j++)
       EXPECT_EQ(data[j], stream_data[j]) << " at byte " << j;
diff --git a/fpdfsdk/fpdfedittext.cpp b/fpdfsdk/fpdfedittext.cpp
index bac1108..22c6266 100644
--- a/fpdfsdk/fpdfedittext.cpp
+++ b/fpdfsdk/fpdfedittext.cpp
@@ -71,6 +71,11 @@
 
   CPDF_Stream* pStream = pDoc->NewIndirect<CPDF_Stream>();
   pStream->SetData(data, size);
+  // TODO(npm): Lengths for Type1 fonts.
+  if (font_type == FPDF_FONT_TRUETYPE) {
+    pStream->GetDict()->SetNewFor<CPDF_Number>("Length1",
+                                               static_cast<int>(size));
+  }
   ByteString fontFile = font_type == FPDF_FONT_TYPE1 ? "FontFile" : "FontFile2";
   fontDesc->SetNewFor<CPDF_Reference>(fontFile, pDoc, pStream->GetObjNum());
   return fontDesc;