diff --git a/tools/bftest.c b/tools/bftest.c
index 8a1572c2b..3c1d93bd9 100644
--- a/tools/bftest.c
+++ b/tools/bftest.c
@@ -26,6 +26,7 @@
 #include <fcntl.h>
 #endif
 
+#define INCLUDED_BY_MAIN_MODULE 1
 #include "util.h"
 #include "cipher.h"
 #include "i18n.h"
diff --git a/tools/mpicalc.c b/tools/mpicalc.c
index 46e5fc824..e75d4af39 100644
--- a/tools/mpicalc.c
+++ b/tools/mpicalc.c
@@ -31,6 +31,7 @@
 #include <stdlib.h>
 #include <ctype.h>
 
+#define INCLUDED_BY_MAIN_MODULE 1
 #include "util.h"
 #include "mpi.h"
 #include "i18n.h"
diff --git a/tools/shmtest.c b/tools/shmtest.c
index 76513cbcd..7bf5aa25d 100644
--- a/tools/shmtest.c
+++ b/tools/shmtest.c
@@ -25,6 +25,7 @@
 #ifdef HAVE_SYS_SHM_H
 #include <sys/shm.h>
 #endif
+#define INCLUDED_BY_MAIN_MODULE 1
 #include "util.h"
 #include "ttyio.h"
 #include "i18n.h"