diff --git a/include/simengine.hrl b/include/simengine.hrl
index 6fbc2b1..36365d5 100644
--- a/include/simengine.hrl
+++ b/include/simengine.hrl
@@ -8,6 +8,8 @@
 %%%-------------------------------------------------------------------
 -author("stephb").
 
+-include("../include/common.hrl").
+
 -record( simulation, { name = <<>> :: binary(),
 	ca = <<>> :: binary(),
 	num_devices = 0 :: integer(),