diff --git a/src/pybalmorel/plotting/maps_balmorel.py b/src/pybalmorel/plotting/maps_balmorel.py
index 71e5c2d..cd1aee8 100644
--- a/src/pybalmorel/plotting/maps_balmorel.py
+++ b/src/pybalmorel/plotting/maps_balmorel.py
@@ -159,6 +159,7 @@ def plot_map(path_to_result: str,
         font_hub = 12 #Font size of hub labels
         font_region = 10 #Font size of region labels
         line_decimals = 1 #Number of decimals shown for line capacities
+        COMMODITY = COMMODITY.capitalize()
         # For Elec
         if COMMODITY == 'Electricity':
             line_width_constant = .2 #Constant related to thickness of lines: the higher the number, the narrower the lines will be
diff --git a/tests/test_postprocessing.py b/tests/test_postprocessing.py
index d7d07f4..2c9fd72 100644
--- a/tests/test_postprocessing.py
+++ b/tests/test_postprocessing.py
@@ -54,8 +54,8 @@ def test_MainResults():
     assert 'electricity_profile.png' in os.listdir('tests/output') and 'heat_profile.png' in os.listdir('tests/output') and 'hydrogen_profile.png' in os.listdir('tests/output')
     
     # Test map
-    fig, ax = res.plot_map('SC2', 'Electricity', 2050)
+    fig, ax = res.plot_map('SC2', 'elecTriciTY', 2050)
     fig.savefig('tests/output/electricity_map.png') 
-    fig, ax = res.plot_map('SC2', 'Hydrogen', 2050) 
+    fig, ax = res.plot_map('SC2', 'HYDROGEN', 2050) 
     fig.savefig('tests/output/hydrogen_map.png') 
     assert 'electricity_map.png' in os.listdir('tests/output') and 'hydrogen_map.png' in os.listdir('tests/output')
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