diff --git a/artiq/runtime/i2c.c b/artiq/runtime/i2c.c
index c8ec3f131..136df4303 100644
--- a/artiq/runtime/i2c.c
+++ b/artiq/runtime/i2c.c
@@ -1,7 +1,6 @@
 #include <generated/csr.h>
 
 #include "artiq_personality.h"
-#include "rtio.h"
 #include "i2c.h"