diff --git a/src/fuse_create.cpp b/src/fuse_create.cpp
index eaf7b366..a55f7b7c 100644
--- a/src/fuse_create.cpp
+++ b/src/fuse_create.cpp
@@ -292,7 +292,7 @@ namespace FUSE
       {
       default:
         return rv;
-      case PassthroughEnum::ro:
+      case (PassthroughEnum::ro << 32) | O_RDONLY:
       case PassthroughEnum::wo:
       case PassthroughEnum::rw:
         return l::passthrough(fc,ffi_);