diff --git a/neurodamus/connection.py b/neurodamus/connection.py
index 3016c994f..dda581197 100644
--- a/neurodamus/connection.py
+++ b/neurodamus/connection.py
@@ -6,7 +6,7 @@
 import re
 from enum import Enum
 from .core import NeurodamusCore as Nd
-from .core.configuration import GlobalConfig, SimConfig
+from .core.configuration import GlobalConfig, SimConfig, ConfigurationError
 from .utils import compat
 from .utils.logging import log_all
 from .utils.pyutils import append_recarray
@@ -560,7 +560,7 @@ def _update_conductance_ratio(self, syn_obj, is_inhibitory, value):
     def _configure(self, synapses, configuration):
         res = self.ConnUtils.executeConfigure(synapses, configuration)
         if res > 0:
-            raise ValueError(f"Errors found in configuration: {configuration}")
+            raise ConfigurationError(f"Errors found in configuration: {configuration}")
 
     def _configure_cell(self, cell):
         """ Internal helper to apply all the configuration statements on
diff --git a/tests/integration-e2e/test_connection.py b/tests/integration-e2e/test_connection.py
index 8f4fd4c14..a32ab5997 100644
--- a/tests/integration-e2e/test_connection.py
+++ b/tests/integration-e2e/test_connection.py
@@ -2,6 +2,8 @@
 import os
 import pytest
 from pathlib import Path
+
+from neurodamus.core.configuration import ConfigurationError
 from neurodamus.io.synapse_reader import SynapseParameters
 from neurodamus.node import Node
 from tempfile import NamedTemporaryFile
@@ -14,11 +16,10 @@
 def sonata_config_file_err(sonata_config):
     extra_config = {"connection_overrides": [
         {
-            "name": "scheme_CaUse_ee_ERR",
-            "source": "Excitatory",
-            "target": "Excitatory",
-            "weight": 1.0,
-            "synapse_configure": "%s.dummy=1 cao_CR_GluSynapse = 1.2 %s.Use_d *= 0.158401372855"
+            "name": "config_ERR",
+            "source": "nodesPopB",
+            "target": "nodesPopB",
+            "synapse_configure": "%s.dummy=1"
         }
     ]}
 
@@ -53,15 +54,10 @@ def test_add_synapses():
 
 @pytest.mark.slow
 def test_config_error(sonata_config_file_err):
-    with pytest.raises(ValueError):
-        n = Node(str(sonata_config_file_err))
+    with pytest.raises(ConfigurationError):
+        n = Node(str(sonata_config_file_err.name))
         n.load_targets()
         n.create_cells()
         n.create_synapses()
-        syn_manager = n.circuits.get_edge_manager("default", "default")
-        conn = list(syn_manager.get_connections(62798))[0]
-        new_params = SynapseParameters.create_array(1)
-        new_params[0].sgid = conn.sgid
-        conn.add_synapses(n._target_manager, new_params)
         for syn_manager in n._circuits.all_synapse_managers():
             syn_manager.finalize(0, False)
diff --git a/tests/simulations/v5_sonata/simulation_config_err.json b/tests/simulations/v5_sonata/simulation_config_err.json
deleted file mode 100644
index 41fe5c3b2..000000000
--- a/tests/simulations/v5_sonata/simulation_config_err.json
+++ /dev/null
@@ -1,84 +0,0 @@
-{
-    "version": 1,
-    "manifest": {
-        "$OUTPUT_DIR": "./",
-        "$INPUT_DIR": "./"
-    },
-    "node_sets_file": "node_sets.json",
-    "node_set": "MiniColumn_703",
-    "target_simulator": "NEURON",
-    "run": {
-        "tstart": 0,
-        "tstop": 40,
-        "dt": 0.025,
-        "random_seed": 767740
-    },
-    "conditions": {
-    },
-    "output": {
-        "output_dir": "output_sonata"
-    },
-    "connection_overrides": [
-        {
-            "name": "scheme_CaUse_ee",
-            "source": "Excitatory",
-            "target": "Excitatory",
-            "weight": 1.0,
-            "synapse_configure": "%s.dummy=1 cao_CR_GluSynapse = 1.2 %s.Use_d *= 0.158401372855 %s.Use_p *= 0.158401372855"
-        }
-    ],
-    "inputs": {
-        "spikeReplay": {
-            "module": "synapse_replay",
-            "input_type": "spikes",
-            "spike_file": "input.dat",
-            "delay": 0,
-            "duration": 30000,
-            "node_set": "Mosaic"
-        },
-        "ThresholdExc": {
-            "module": "noise",
-            "input_type": "current_clamp",
-            "mean_percent": 100.457136089,
-            "variance": 0.001,
-            "delay": 0.0,
-            "duration": 30000,
-            "node_set": "Excitatory"
-        },
-        "ThresholdInh": {
-            "module": "noise",
-            "input_type": "current_clamp",
-            "mean_percent": 100.457136089,
-            "variance": 0.001,
-            "delay": 0.0,
-            "duration": 30000,
-            "node_set": "Inhibitory"
-        },
-        "hypamp_mosaic": {
-            "module": "hyperpolarizing",
-            "input_type": "current_clamp",
-            "delay": 0.0,
-            "duration": 30000,
-            "node_set": "Mosaic"
-        }
-    },
-    "reports": {
-        "soma_report": {
-            "type": "compartment",
-            "cells": "Mosaic",
-            "variable_name": "v",
-            "dt": 0.1,
-            "start_time": 0.0,
-            "end_time": 40.0
-        },
-        "compartment_report": {
-            "type": "compartment",
-            "cells": "Mosaic",
-            "variable_name": "v",
-            "sections": "all",
-            "dt": 0.1,
-            "start_time": 0.0,
-            "end_time": 40.0
-        }
-    }
-}