diff --git a/encfs/FileNode.cpp b/encfs/FileNode.cpp
index 022c384..6e7d6f4 100644
--- a/encfs/FileNode.cpp
+++ b/encfs/FileNode.cpp
@@ -228,7 +228,7 @@ int FileNode::getAttr(struct stat *stbuf) const {
 off_t FileNode::getSize() const {
   Lock _lock(mutex);
 
-  int res = io->getSize();
+  off_t res = io->getSize();
   return res;
 }