diff --git a/src/utils/lib/fst_hash.c b/src/utils/lib/fst_hash.c
index e925bb20..1d3b3e27 100755
--- a/src/utils/lib/fst_hash.c
+++ b/src/utils/lib/fst_hash.c
@@ -16,6 +16,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <stdint.h>
 
 static const unsigned int smalltable[256] = {
     0x00000000,0x77073096,0xEE0E612C,0x990951BA,