diff --git a/nx/include/switch/kernel/random.h b/nx/include/switch/kernel/random.h
index 45abe1d6..05c0b172 100644
--- a/nx/include/switch/kernel/random.h
+++ b/nx/include/switch/kernel/random.h
@@ -1,4 +1,4 @@
 // Copyright 2018 plutoo
 
 void randomGet(u8* buf, size_t len);
-u64 randomGet64(u8* buf, size_t len);
+u64  randomGet64(void);
diff --git a/nx/source/kernel/random.c b/nx/source/kernel/random.c
index 9390b12e..5ba17a96 100644
--- a/nx/source/kernel/random.c
+++ b/nx/source/kernel/random.c
@@ -151,7 +151,7 @@ void randomGet(u8* buf, size_t len)
     mutexUnlock(&g_randMutex);
 }
 
-u64 randomGet64(u8* buf, size_t len)
+u64 randomGet64(void)
 {
     u64 tmp;
     randomGet((u8*) &tmp, sizeof(tmp));