diff --git a/runtime/platform/mach_o.h b/runtime/platform/mach_o.h
index bae6943287c..1c5e5f7030a 100644
--- a/runtime/platform/mach_o.h
+++ b/runtime/platform/mach_o.h
@@ -103,6 +103,8 @@ static constexpr uint32_t MH_DYLDLINK = 0x4;
 // The object file does not re-export any of its input dynamic
 // libraries.
 static constexpr uint32_t MH_NO_REEXPORTED_DYLIBS = 0x100000;
+// The object file uses two-level namespace bindings.
+static constexpr uint32_t MH_TWOLEVEL = 0x80;
 
 struct load_command {
   // The tag that specifies the load command for the following
diff --git a/runtime/vm/mach_o.cc b/runtime/vm/mach_o.cc
index cd8340e6f44..b16b84a3257 100644
--- a/runtime/vm/mach_o.cc
+++ b/runtime/vm/mach_o.cc
@@ -1932,7 +1932,7 @@ class MachOHeader : public MachOContents {
   uint32_t flags() const {
     if (type_ == SnapshotType::Snapshot) {
       return mach_o::MH_NOUNDEFS | mach_o::MH_DYLDLINK |
-             mach_o::MH_NO_REEXPORTED_DYLIBS;
+             mach_o::MH_NO_REEXPORTED_DYLIBS | mach_o::MH_TWOLEVEL;
     }
     ASSERT(type_ == SnapshotType::DebugInfo || type_ == SnapshotType::Object);
     return 0;