diff --git a/src/fuse_open.cpp b/src/fuse_open.cpp
index d28a6450..f1887264 100644
--- a/src/fuse_open.cpp
+++ b/src/fuse_open.cpp
@@ -38,6 +38,8 @@
 
 struct PT
 {
+  PT() {};
+  
   int backing_id;
   std::mutex mutex;
 };