diff --git a/test/SerialIOTest.cpp b/test/SerialIOTest.cpp
index 0faf40790a..f511d878e6 100644
--- a/test/SerialIOTest.cpp
+++ b/test/SerialIOTest.cpp
@@ -2113,6 +2113,7 @@ inline void fileBased_write_test(const std::string &backend)
         helper::listSeries(list);
     }
 
+#ifdef __unix__
     /*
      * Check that the ranktable was written correctly to every iteration file.
      */
@@ -2150,6 +2151,7 @@ inline void fileBased_write_test(const std::string &backend)
         closedir(directory);
         close(dirfd);
     }
+#endif // defined(__unix__)
 }
 
 TEST_CASE("fileBased_write_test", "[serial]")