diff --git a/lib/ramble/ramble/test/namespace_trie.py b/lib/ramble/ramble/test/namespace_trie.py
index c7cfa08277..d7758f7e0c 100644
--- a/lib/ramble/ramble/test/namespace_trie.py
+++ b/lib/ramble/ramble/test/namespace_trie.py
@@ -22,7 +22,8 @@ def test_add_single(trie):
     assert trie.is_prefix("foo")
     assert trie.has_value("foo")
     assert trie["foo"] == "bar"
-    assert not trie.is_leaf("foo")
+    assert trie.is_leaf("foo")
+    assert not trie.is_leaf("bar")
 
 
 def test_add_multiple(trie):
@@ -30,13 +31,16 @@ def test_add_multiple(trie):
 
     assert not trie.has_value("foo")
     assert trie.is_prefix("foo")
+    assert not trie.is_leaf("foo")
 
     assert trie.is_prefix("foo.bar")
     assert trie.has_value("foo.bar")
     assert trie["foo.bar"] == "baz"
+    assert trie.is_leaf("foo.bar")
 
     assert not trie.is_prefix("foo.bar.baz")
     assert not trie.has_value("foo.bar.baz")
+    assert not trie.is_leaf("foo.bar.baz")
 
 
 def test_add_three(trie):
@@ -45,16 +49,20 @@ def test_add_three(trie):
 
     assert trie.is_prefix("foo")
     assert not trie.has_value("foo")
+    assert not trie.is_leaf("foo")
 
     assert trie.is_prefix("foo.bar")
     assert not trie.has_value("foo.bar")
+    assert not trie.is_leaf("foo.bar")
 
     assert trie.is_prefix("foo.bar.baz")
     assert trie.has_value("foo.bar.baz")
     assert trie["foo.bar.baz"] == "quux"
+    assert trie.is_leaf("foo.bar.baz")
 
     assert not trie.is_prefix("foo.bar.baz.quux")
     assert not trie.has_value("foo.bar.baz.quux")
+    assert not trie.is_leaf("foo.bar.baz.quux")
 
     # Try to add a second element in a prefix namespace
     trie["foo.bar"] = "blah"
diff --git a/lib/ramble/ramble/util/naming.py b/lib/ramble/ramble/util/naming.py
index 960c6d60a0..3734d147b3 100644
--- a/lib/ramble/ramble/util/naming.py
+++ b/lib/ramble/ramble/util/naming.py
@@ -210,7 +210,7 @@ def is_leaf(self, namespace):
         """True if this namespace has no children in the trie."""
         first, _, rest = namespace.partition(self._sep)
         if not first:
-            return bool(self._subspaces)
+            return not self._subspaces
         elif first not in self._subspaces:
             return False
         else: