diff --git a/src/fuse_open.cpp b/src/fuse_open.cpp
index 44940bf5..ec1d95ae 100644
--- a/src/fuse_open.cpp
+++ b/src/fuse_open.cpp
@@ -14,6 +14,8 @@
   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
 
+#include "passthrough.hpp"
+
 #include "config.hpp"
 #include "errno.hpp"
 #include "fileinfo.hpp"