diff --git a/.travis.yml b/.travis.yml
index 3b8292b..e0e9594 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -139,7 +139,7 @@ jobs:
       install:
         - sudo apt-get install libfuse-dev
         - git clone --depth 1 https://github.com/geky/littlefs-fuse -b v2-alpha v2
-        - git clone --depth 1 https://github.com/geky/littlefs-fuse v1
+        - git clone --depth 1 https://github.com/geky/littlefs-fuse -b v1 v1
         - fusermount -V
         - gcc --version
       before_script:
diff --git a/lfs2.c b/lfs2.c
index 8b58a48..a181c40 100644
--- a/lfs2.c
+++ b/lfs2.c
@@ -2864,6 +2864,10 @@ int lfs2_file_truncate(lfs2_t *lfs2, lfs2_file_t *file, lfs2_off_t size) {
         return LFS2_ERR_BADF;
     }
 
+    if (size > LFS2_FILE_MAX) {
+        return LFS2_ERR_INVAL;
+    }
+
     lfs2_off_t oldsize = lfs2_file_size(lfs2, file);
     if (size < oldsize) {
         // need to flush since directly changing metadata
diff --git a/lfs2.h b/lfs2.h
index d4ee66b..a345d54 100644
--- a/lfs2.h
+++ b/lfs2.h
@@ -578,7 +578,8 @@ int lfs2_dir_close(lfs2_t *lfs2, lfs2_dir_t *dir);
 // Read an entry in the directory
 //
 // Fills out the info structure, based on the specified file or directory.
-// Returns a negative error code on failure.
+// Returns a positive value on success, 0 at the end of directory,
+// or a negative error code on failure.
 int lfs2_dir_read(lfs2_t *lfs2, lfs2_dir_t *dir, struct lfs2_info *info);
 
 // Change the position of the directory