diff --git a/rclone_python/__init__.py b/rclone_python/__init__.py
index 987a528..b13f7d1 100644
--- a/rclone_python/__init__.py
+++ b/rclone_python/__init__.py
@@ -1 +1 @@
-VERSION = "0.1.14"
+VERSION = "0.1.15"
diff --git a/rclone_python/utils.py b/rclone_python/utils.py
index 3f07696..20ee748 100644
--- a/rclone_python/utils.py
+++ b/rclone_python/utils.py
@@ -21,7 +21,10 @@
 
 def args2string(args: List[str]) -> str:
     # separate flags/ named arguments by a space
-    return " ".join(args)
+    if args:
+        return " " + " ".join(args)
+
+    return ""
 
 
 def run_cmd(
diff --git a/tests/test_utils.py b/tests/test_utils.py
new file mode 100644
index 0000000..30ccb39
--- /dev/null
+++ b/tests/test_utils.py
@@ -0,0 +1,15 @@
+from rclone_python.utils import args2string
+
+
+def test_args2string():
+    args = []
+
+    result = args2string(args)
+
+    assert result == ""
+
+    args = ["--links", "--transfers", "40"]
+
+    result = args2string(args)
+
+    assert result == " --links --transfers 40"