diff --git a/artiq/firmware/ksupport/api.rs b/artiq/firmware/ksupport/api.rs
index 99add22fa..7b219562c 100644
--- a/artiq/firmware/ksupport/api.rs
+++ b/artiq/firmware/ksupport/api.rs
@@ -101,7 +101,6 @@ static mut API: &'static [(&'static str, *const ())] = &[
     api!(log10),
     api!(nextafter),
     api!(pow),
-    api!(rint),
     api!(round),
     api!(sin),
     api!(sinh),