diff --git a/libsodium-sys/build.rs b/libsodium-sys/build.rs
index 26d7878..310124a 100644
--- a/libsodium-sys/build.rs
+++ b/libsodium-sys/build.rs
@@ -233,7 +233,11 @@ fn make_libsodium(target: &str, source_dir: &Path, install_dir: &Path) -> PathBu
             cflags += " -march=i686";
         }
         let host = env::var("HOST").unwrap();
-        host_arg = format!("--host={}", target);
+        host_arg = format!("--host={}", if target == "riscv64gc-unknown-linux-gnu" {
+            "riscv64-unknown-linux-gnu"
+        } else {
+            target
+        });
         cross_compiling = target != host;
         help = if cross_compiling {
             "***********************************************************\n\