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-rw-r--r--pyecsca/sca/re/tree.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/pyecsca/sca/re/tree.py b/pyecsca/sca/re/tree.py
index 796ee7e..638e456 100644
--- a/pyecsca/sca/re/tree.py
+++ b/pyecsca/sca/re/tree.py
@@ -151,7 +151,7 @@ class Map:
def __getitem__(self, item):
if isinstance(item, tuple):
cfg, inp = item
- row = self.cfg_map.loc[cfg, "vals"]
+ row = self.cfg_map.loc[[cfg], "vals"][0]
col = self.domain.index(inp)
return self.mapping.loc[row, col]
else: