diff --git a/src/deflex/results.py b/src/deflex/results.py
index 9ef3f163..af2954ef 100644
--- a/src/deflex/results.py
+++ b/src/deflex/results.py
@@ -236,7 +236,7 @@ def change_subtag(node, changes):
                     if agg[2] < 0:
                         val = "_".join(node.label.subtag.split("_")[: agg[2]])
                     elif agg[2] > 0:
-                        val = "_".join(node.label.subtag.split("_")[agg[2]:])
+                        val = "_".join(node.label.subtag.split("_")[agg[2] :])
                 else:
                     val = agg[2]
         return val