diff --git a/basics.h b/basics.h
index ccf37b..ffe918 100644
--- a/basics.h
+++ b/basics.h
@@ -40,6 +40,7 @@
 
 #include <stdlib.h>
 #include <string.h>
+#include <stdint.h>
 
 #include <math.h>
 #include <float.h>