diff --git a/ipc/file_descriptor_set_posix.h b/ipc/file_descriptor_set_posix.h
index de4c5c6..f9c6033 100644
--- a/ipc/file_descriptor_set_posix.h
+++ b/ipc/file_descriptor_set_posix.h
@@ -30,7 +30,7 @@
   //
   // In debugging mode, it's a fatal error to try and add more than this number
   // of descriptors to a FileDescriptorSet.
-  static const size_t kMaxDescriptorsPerMessage = 5;
+  static const size_t kMaxDescriptorsPerMessage = 7;
 
   // ---------------------------------------------------------------------------
   // Interfaces for building during message serialisation...