diff --git a/tests/test_scripts/test_solph/test_generic_caes/generic_caes.csv b/tests/test_scripts/test_solph/test_generic_caes/generic_caes.csv
index 0c00956b4..1658a9f4c 100644
--- a/tests/test_scripts/test_solph/test_generic_caes/generic_caes.csv
+++ b/tests/test_scripts/test_solph/test_generic_caes/generic_caes.csv
@@ -238,4 +238,3 @@ timestep,price_el_sink,price_el_source
 237,-33.57,33.57
 238,-30.51,30.51
 239,-30.57,30.57
-240,-29.28,29.28
diff --git a/tests/test_scripts/test_solph/test_generic_caes/test_generic_caes.py b/tests/test_scripts/test_solph/test_generic_caes/test_generic_caes.py
index dc40286cb..8c9e041e4 100644
--- a/tests/test_scripts/test_solph/test_generic_caes/test_generic_caes.py
+++ b/tests/test_scripts/test_solph/test_generic_caes/test_generic_caes.py
@@ -34,7 +34,7 @@ def test_gen_caes():
     data = pd.read_csv(full_filename)
 
     # select periods
-    periods = len(data) - 1
+    periods = len(data)
 
     # create an energy system
     idx = pd.date_range("1/1/2017", periods=periods, freq="h")
diff --git a/tests/test_scripts/test_solph/test_generic_chp/ccet.csv b/tests/test_scripts/test_solph/test_generic_chp/ccet.csv
index ec231419f..185a1f1a2 100644
--- a/tests/test_scripts/test_solph/test_generic_chp/ccet.csv
+++ b/tests/test_scripts/test_solph/test_generic_chp/ccet.csv
@@ -198,4 +198,3 @@ timestep,demand_th,price_el,Eta_el_max_woDH,P_max_woDH,Eta_el_min_woDH,P_min_woD
 197,0.97,-50,0.53,199.73,0.43,80.65,0.19,31.71,0.19
 198,0.98,-50,0.53,199.73,0.43,80.65,0.19,31.71,0.19
 199,0.99,-50,0.53,199.73,0.43,80.65,0.19,31.71,0.19
-200,1,-50,0.53,199.73,0.43,80.65,0.19,31.71,0.19
diff --git a/tests/test_scripts/test_solph/test_generic_chp/test_generic_chp.py b/tests/test_scripts/test_solph/test_generic_chp/test_generic_chp.py
index 6c9f8c423..c5770d279 100644
--- a/tests/test_scripts/test_solph/test_generic_chp/test_generic_chp.py
+++ b/tests/test_scripts/test_solph/test_generic_chp/test_generic_chp.py
@@ -28,7 +28,7 @@ def test_gen_chp():
     data = pd.read_csv(full_filename)
 
     # select periods
-    periods = len(data) - 1
+    periods = len(data)
 
     # create an energy system
     idx = pd.date_range("1/1/2017", periods=periods, freq="h")