diff --git a/CHANGELOG.md b/CHANGELOG.md
index caef7da..d2d9478 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 ### Removed
 
+## [0.4.1] - 2019-10-06
+### Changed
+- Save tree_name as single string if only one tree included, PR #30
+
 ## [0.4.0] - 2019-10-06
 ### Added
 - Support for handling mulitple input trees in each file, PR #28
diff --git a/fast_curator/version.py b/fast_curator/version.py
index 6e06bfc..f337cef 100644
--- a/fast_curator/version.py
+++ b/fast_curator/version.py
@@ -12,5 +12,5 @@ def split_version(version):
     return tuple(result)
 
 
-__version__ = '0.4.0'
+__version__ = '0.4.1'
 version_info = split_version(__version__) # noqa
diff --git a/fast_curator/write.py b/fast_curator/write.py
index 24bc48c..a549f98 100644
--- a/fast_curator/write.py
+++ b/fast_curator/write.py
@@ -40,7 +40,7 @@ def prepare_file_list(files, dataset, eventtype, tree_name, expand_files="xrootd
     data["nevents"] = numentries
     data["nfiles"] = len(full_list)
     data["files"] = full_list
-    data["tree"] = tree_name
+    data["tree"] = tree_name[0] if len(tree_name) == 1 else tree_name
     if branches:
         data["branches"] = branches
 
diff --git a/setup.cfg b/setup.cfg
index e894806..b7685b0 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 0.4.0
+current_version = 0.4.1
 commit = True
 tag = False