diff --git a/src/hb-ot-cmap-table.hh b/src/hb-ot-cmap-table.hh
index 4297550fd..70373ee8b 100644
--- a/src/hb-ot-cmap-table.hh
+++ b/src/hb-ot-cmap-table.hh
@@ -417,6 +417,7 @@ struct CmapSubtableLongGroup
   public:
   DEFINE_SIZE_STATIC (12);
 };
+DECLARE_NULL_NAMESPACE_BYTES (OT, CmapSubtableLongGroup);
 
 template <typename UINT>
 struct CmapSubtableTrimmed
diff --git a/src/hb-static.cc b/src/hb-static.cc
index 73d9528e6..3ea640246 100644
--- a/src/hb-static.cc
+++ b/src/hb-static.cc
@@ -27,10 +27,11 @@
 #include "hb.hh"
 
 #include "hb-open-type.hh"
-#include "hb-ot-layout-common.hh"
 #include "hb-aat-layout-common.hh"
+#include "hb-ot-layout-common.hh"
 
 #include "hb-face.hh"
+#include "hb-ot-cmap-table.hh"
 #include "hb-ot-head-table.hh"
 #include "hb-ot-maxp-table.hh"
 
@@ -42,6 +43,7 @@ hb_vector_size_impl_t const _hb_NullPool[(HB_NULL_POOL_SIZE + sizeof (hb_vector_
 DEFINE_NULL_NAMESPACE_BYTES (OT, Index) =  {0xFF,0xFF};
 DEFINE_NULL_NAMESPACE_BYTES (OT, LangSys) = {0x00,0x00, 0xFF,0xFF, 0x00,0x00};
 DEFINE_NULL_NAMESPACE_BYTES (OT, RangeRecord) = {0x00,0x01, 0x00,0x00, 0x00, 0x00};
+DEFINE_NULL_NAMESPACE_BYTES (OT, CmapSubtableLongGroup) = {0x00,0x00,0x00,0x01, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00};
 /* Hand-coded because Lookup is a template.  Sad. */
 const unsigned char _hb_Null_AAT_Lookup[2] = {0xFF, 0xFF};