diff --git a/demod/mod/demod_mod.h b/demod/mod/demod_mod.h
index 8225156..5fb4899 100644
--- a/demod/mod/demod_mod.h
+++ b/demod/mod/demod_mod.h
@@ -17,6 +17,7 @@
 typedef unsigned char  ui8_t;
 typedef unsigned short ui16_t;
 typedef unsigned int   ui32_t;
+typedef unsigned long long ui64_t;
 typedef char  i8_t;
 typedef short i16_t;
 typedef int   i32_t;