diff --git a/src/lib.rs b/src/lib.rs
index d1195a4a..a3848973 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -48,6 +48,7 @@ pub mod int;
     all(target_arch = "x86_64", target_os = "none"),
     all(target_arch = "x86_64", target_os = "uefi"),
     all(target_arch = "arm", target_os = "none"),
+    all(target_arch = "riscv32", not(target_feature = "f"), target_os = "none"),
     all(target_arch = "xtensa", target_os = "none"),
     all(target_arch = "mips", target_os = "none"),
     target_os = "xous",