diff --git a/src/georam_class.h b/src/georam_class.h
index e0b7768..d91ffd3 100755
--- a/src/georam_class.h
+++ b/src/georam_class.h
@@ -15,6 +15,7 @@
 #ifndef GEORAM_CLASS_H
 #define GEORAM_CLASS_H
 
+#include <inttypes.h>
 #include <fstream>
 
 // 512KiB, 1MiB, 2MiB, 4MiB