diff --git a/src/data/DataDist.c b/src/data/DataDist.c
index 7f7121f..18eef33 100644
--- a/src/data/DataDist.c
+++ b/src/data/DataDist.c
@@ -27,6 +27,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <stdint.h>
 
 #include <hashtab.h>
 
@@ -89,7 +90,7 @@ hashInter(void *p, unsigned size)
 {
   TabEntryInter *entryP = p;
 
-  return ((unsigned) entryP->atom1P + (unsigned) entryP->atom2P) % size;
+  return ((unsigned)(uintptr_t) entryP->atom1P + (unsigned)(uintptr_t) entryP->atom2P) % size;
 }
 
 static int