diff --git a/pycirk/make_scenarios.py b/pycirk/make_scenarios.py
index d974384..f238cc2 100644
--- a/pycirk/make_scenarios.py
+++ b/pycirk/make_scenarios.py
@@ -152,7 +152,7 @@ def counterfactual(scen_file, scen_no, M, M_name, labels):
         raise KeyError("only integer or explicit name (scenario_x) are allowed")
 
 
-    scenario = pd.read_excel(scen_file, sheet_name=scen_no, header=1, index=None)
+    scenario = pd.read_excel(scen_file, sheet_name=scen_no, header=1)
 
     if scenario["matrix"].isnull().values.all():
         matrix = M
diff --git a/requirements.txt b/requirements.txt
index dd3aa3b..79c33c9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,4 +4,5 @@ pandas>=0.24.2
 numpy>=1.16.4
 munch>=2.3.2
 openpyxl>=2.6.2
-pytest>=5.0.1
\ No newline at end of file
+pytest>=5.0.1
+munch
\ No newline at end of file
diff --git a/tests/scenarios.xlsx b/tests/scenarios.xlsx
index aee758a..e71edc1 100644
Binary files a/tests/scenarios.xlsx and b/tests/scenarios.xlsx differ