kc3-lang/libtommath

diff --git a/etc/pprime.c b/etc/pprime.c
index 411e446..fe32a30 100644
--- a/etc/pprime.c
+++ b/etc/pprime.c
@@ -7,6 +7,7 @@
 #include <stdlib.h>
 #include <time.h>
 #include "tommath.h"
+#include "tommath_private.h" /* mp_word */
 
 static int   n_prime;
 static FILE *primes;