diff --git a/repertory/repertory_test/src/fuse_drive_test.cpp b/repertory/repertory_test/src/fuse_drive_test.cpp
index 261b1e94..79d25822 100644
--- a/repertory/repertory_test/src/fuse_drive_test.cpp
+++ b/repertory/repertory_test/src/fuse_drive_test.cpp
@@ -19,7 +19,7 @@
   OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   SOFTWARE.
 */
-#if !_WIN32
+#if !defined(_WIN32)
 
 #include "test_common.hpp"