diff --git a/black.py b/black.py
index 910a0ed..f7022d8 100644
--- a/black.py
+++ b/black.py
@@ -3008,8 +3008,7 @@ def maybe_make_parens_invisible_in_atom(node: LN, parent: LN) -> bool:
         # make parentheses invisible
         first.value = ""  # type: ignore
         last.value = ""  # type: ignore
-        if len(node.children) > 1:
-            maybe_make_parens_invisible_in_atom(node.children[1], parent=parent)
+        maybe_make_parens_invisible_in_atom(node.children[1], parent=parent)
         return False
 
     return True