diff --git a/modules/libcom/src/as/asLib.h b/modules/libcom/src/as/asLib.h
index 73a482a62f..b30c0c3fee 100644
--- a/modules/libcom/src/as/asLib.h
+++ b/modules/libcom/src/as/asLib.h
@@ -17,6 +17,9 @@
 #include "ellLib.h"
 #include "errMdef.h"
 #include "errlog.h"
+#ifndef BUILDING_libCom_API
+#  include <asTrapWrite.h>
+#endif
 
 #ifdef __cplusplus
 extern "C" {