diff --git a/src/lib.rs b/src/lib.rs
index 0595c4a..2e17c50 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -413,11 +413,12 @@ impl Build {
         let src = self.ensure_check_file()?;
         let obj = out_dir.join("flag_check");
         let target = self.get_target()?;
+        let host = self.get_host()?;
         let mut cfg = Build::new();
         cfg.flag(flag)
             .target(&target)
             .opt_level(0)
-            .host(&target)
+            .host(&host)
             .debug(false)
             .cpp(self.cpp)
             .cuda(self.cuda);