diff --git a/src/register/splitreg.c b/src/register/splitreg.c
index 364f78e8b5..1f70e40f39 100644
--- a/src/register/splitreg.c
+++ b/src/register/splitreg.c
@@ -38,6 +38,10 @@
 #include "splitreg.h"
 #include "table-allgui.h"
 #include "textcell.h"
+#include "util.h"
+
+/* This static indicates the debugging module that this .o belongs to.  */
+static short module = MOD_REGISTER;
 
 /* utility defines for cell configuration data */
 #define DATE_CELL      0