diff --git a/librocksdb-sys/build.rs b/librocksdb-sys/build.rs
index 584388e..57264fd 100644
--- a/librocksdb-sys/build.rs
+++ b/librocksdb-sys/build.rs
@@ -234,7 +234,7 @@ fn build_rocksdb() {
         config.flag("-fno-builtin-memcmp");
         config.define("_REENTRANT", None);
     } else if target.contains("openbsd") {
-        config.flag("-march=haswell");
+        //config.flag("-march=haswell");
         config.define("OS_OPENBSD", None);
         config.define("ROCKSDB_PLATFORM_POSIX", None);
         config.define("ROCKSDB_LIB_IO_POSIX", None);