diff --git a/gnpy/tools/json_io.py b/gnpy/tools/json_io.py
index a31181be..a51f70c2 100644
--- a/gnpy/tools/json_io.py
+++ b/gnpy/tools/json_io.py
@@ -349,7 +349,7 @@ def network_from_json(json_data, equipment):
             temp = merge_amplifier_restrictions(temp, extra_params.__dict__)
             el_config['params'] = temp
             el_config['type_variety'] = variety
-        elif typ in ['Fiber', 'RamanFiber']:  # catch it now because the code will crash later!
+        elif (typ in ['Fiber', 'RamanFiber']) or (typ == 'Edfa' and variety not in ['default', '']):
             raise ConfigurationError(f'The {typ} of variety type {variety} was not recognized:'
                                      '\nplease check it is properly defined in the eqpt_config json file')
         el = cls(**el_config)
diff --git a/tests/data/twohops_roadm_power_test.json b/tests/data/twohops_roadm_power_test.json
index c4e1797d..d1573e49 100644
--- a/tests/data/twohops_roadm_power_test.json
+++ b/tests/data/twohops_roadm_power_test.json
@@ -358,7 +358,7 @@
     {
       "uid": "east edfa in node B to ila2",
       "type": "Edfa",
-      "type_variety": "std_high_gain",
+      "type_variety": "std_medium_gain",
       "operational": {
         "gain_target": 35.0,
         "delta_p": 0.0,
@@ -411,7 +411,7 @@
     {
       "uid": "Edfa0_roadm node B",
       "type": "Edfa",
-      "type_variety": "std_high_gain",
+      "type_variety": "std_medium_gain",
       "operational": {
         "gain_target": 19.0,
         "delta_p": -1.0,
@@ -810,4 +810,4 @@
       "to_node": "fiber (ila4 → ila3)-"
     }
   ]
-}
\ No newline at end of file
+}