diff --git a/tests/datapackages/mimo/investment_var_output/data/elements/mimo.csv b/tests/datapackages/mimo/investment_var_output/data/elements/mimo.csv
index 63bcd98..2b3e79a 100644
--- a/tests/datapackages/mimo/investment_var_output/data/elements/mimo.csv
+++ b/tests/datapackages/mimo/investment_var_output/data/elements/mimo.csv
@@ -1,2 +1,2 @@
-type;name;region;year;carrier;tech;expandable;primary;capacity_cost;capacity_potential;from_bus_0;from_bus_1;to_bus_0;to_bus_1;to_bus_2;groups;conversion_factor_gas;conversion_factor_hydro;conversion_factor_heat;emission_factor_gas_co2;emission_factor_hydro_co2;flow_share_fix_gas
-mimo;mimo;DE;2021;elec;mimo;true;electricity;1.2;20;gas;hydro;electricity;heat;co2;{"in": ["gas", "hydro"], "out": ["electricity", "heat"]};1.2;1.3;1.2;0.5;0.3;profile_DE
\ No newline at end of file
+type;name;region;year;carrier;tech;expandable;primary;capacity_cost;capacity_potential;from_bus_0;from_bus_1;to_bus_0;to_bus_1;to_bus_2;groups;conversion_factor_gas;conversion_factor_hydro;conversion_factor_heat;activity_bound_max;emission_factor_gas_co2;emission_factor_hydro_co2;flow_share_fix_gas
+mimo;mimo;DE;2021;elec;mimo;true;electricity;1.2;20;gas;hydro;electricity;heat;co2;{"in": ["gas", "hydro"], "out": ["electricity", "heat"]};1.2;1.3;1.2;18;0.5;0.3;profile_DE
\ No newline at end of file
diff --git a/tests/datapackages/mimo/investment_var_output/datapackage.json b/tests/datapackages/mimo/investment_var_output/datapackage.json
index b4f0425..43091c1 100644
--- a/tests/datapackages/mimo/investment_var_output/datapackage.json
+++ b/tests/datapackages/mimo/investment_var_output/datapackage.json
@@ -208,6 +208,11 @@
                         "type": "number",
                         "format": "default"
                     },
+                    {
+                        "name": "activity_bound_max",
+                        "type": "number",
+                        "format": "default"
+                    },
                     {
                         "name": "emission_factor_gas_co2",
                         "type": "number",
diff --git a/tests/test_datapackage.py b/tests/test_datapackage.py
index f552c05..c9d3ce9 100644
--- a/tests/test_datapackage.py
+++ b/tests/test_datapackage.py
@@ -58,8 +58,8 @@ def test_datapackage_results_for_investment_var_outputs():
     check_results_for_investment_var_output(results)
 
     # Check emissions:
-    gas_input = 20 * 1.2 * 0.8
-    hydro_input = 20 * 1.3 * 0.2
+    gas_input = 18 * 1.2 * 0.8
+    hydro_input = 18 * 1.3 * 0.2
     assert results[("mimo", "co2")]["sequences"]["flow"].values[0] == pytest.approx(
         gas_input * 0.5 + hydro_input * 0.3
     )
diff --git a/tests/test_mimo_converter.py b/tests/test_mimo_converter.py
index ff03508..882d453 100644
--- a/tests/test_mimo_converter.py
+++ b/tests/test_mimo_converter.py
@@ -13,10 +13,7 @@
 from oemof.solph.components import Source
 from oemof.solph.flows import Flow
 
-from oemof_industry.mimo_converter import (
-    MultiInputMultiOutputConverter,
-    MultiInputMultiOutputConverterBlock,
-)
+from oemof_industry.mimo_converter import MultiInputMultiOutputConverter
 
 
 def test_invalid_flow_shares():
diff --git a/tests/test_mimo_investment.py b/tests/test_mimo_investment.py
index b62b09c..44124a4 100644
--- a/tests/test_mimo_investment.py
+++ b/tests/test_mimo_investment.py
@@ -75,6 +75,7 @@ def test_investment_fix_outputs():
             },
             conversion_factors={b_gas: 1.2, b_hydro: 1.3, b_heat: 1.2},
             flow_shares={"fix": {b_gas: [0.8, 0.3], b_heat: 0.8}},
+            activity_bounds={"max": 18}
         )
     )
 
@@ -87,11 +88,11 @@ def test_investment_fix_outputs():
     # create result object
     results = processing.convert_keys_to_strings(processing.results(om))
 
-    assert results[("mimo", "electricity")]["scalars"]["invest"] == 20
+    assert results[("mimo", "electricity")]["scalars"]["invest"] == 18
 
-    assert results[("mimo", "heat")]["sequences"]["flow"].values[0] == 20 * 0.8 * 1.2
-    assert results[("heat_import", "heat")]["sequences"]["flow"].values[0] == 100 - 20 * 0.8 * 1.2
-    assert results[("mimo", "electricity")]["sequences"]["flow"].values[0] == 20
+    assert results[("mimo", "heat")]["sequences"]["flow"].values[0] == 18 * 0.8 * 1.2
+    assert results[("heat_import", "heat")]["sequences"]["flow"].values[0] == 100 - 18 * 0.8 * 1.2
+    assert results[("mimo", "electricity")]["sequences"]["flow"].values[0] == 18
 
 
 def test_investment_var_outputs():
@@ -134,6 +135,7 @@ def test_investment_var_outputs():
             },
             conversion_factors={b_gas: 1.2, b_hydro: 1.3, b_heat: 1.2},
             flow_shares={"fix": {b_gas: [0.8, 0.3, 0.3]}},
+            activity_bounds={"max": 18}
         )
     )
 
@@ -150,10 +152,10 @@ def test_investment_var_outputs():
 
 
 def check_results_for_investment_var_output(results):
-    assert results[("mimo", "electricity")]["scalars"]["invest"] == 20
-    assert results[("mimo", "heat")]["sequences"]["flow"].values[0] == 20 * 1.2
-    assert results[("heat_import", "heat")]["sequences"]["flow"].values[0] == 100 - 20 * 1.2
+    assert results[("mimo", "electricity")]["scalars"]["invest"] == 18
+    assert results[("mimo", "heat")]["sequences"]["flow"].values[0] == pytest.approx(18 * 1.2)
+    assert results[("heat_import", "heat")]["sequences"]["flow"].values[0] == pytest.approx(100 - 18 * 1.2)
     assert results[("mimo", "electricity")]["sequences"]["flow"].values[0] == 0
 
-    assert results[("gas", "mimo")]["sequences"]["flow"].values[0] == pytest.approx(20 * 1.2 * 0.8)
-    assert results[("hydro", "mimo")]["sequences"]["flow"].values[0] == pytest.approx(20 * 1.3 * 0.2)
+    assert results[("gas", "mimo")]["sequences"]["flow"].values[0] == pytest.approx(18 * 1.2 * 0.8)
+    assert results[("hydro", "mimo")]["sequences"]["flow"].values[0] == pytest.approx(18 * 1.3 * 0.2)