diff --git a/eeprom.c b/eeprom.c
index 4668bf2..e1f1d68 100755
--- a/eeprom.c
+++ b/eeprom.c
@@ -8,6 +8,7 @@
 #include <unistd.h>
 #include <string.h>
 #include <stdlib.h>
+#include <stdint.h>
 #include "spinsim.h"
 
 extern int32_t pin_val;
diff --git a/spinsim.c b/spinsim.c
index a0f6741..1d185f2 100755
--- a/spinsim.c
+++ b/spinsim.c
@@ -6,6 +6,7 @@
 '******************************************************************************/
 #include <stdio.h>
 #include <stdlib.h>
+#include <stdint.h>
 #include <string.h>
 #include <ctype.h>
 #include <unistd.h>