diff --git a/lib/mqtt_utils/mqtt_utils.c b/lib/mqtt_utils/mqtt_utils.c
index 30c262c..4bc4249 100644
--- a/lib/mqtt_utils/mqtt_utils.c
+++ b/lib/mqtt_utils/mqtt_utils.c
@@ -5,6 +5,7 @@
  */
 #include <string.h>
 #include <ctype.h>
+#include <stdint.h>
 #include <stdlib.h>
 #include "include/mqtt_utils.h"