diff --git a/README.md b/README.md
index c760177..a99d465 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@ juju integrate sdcore-nrf-k8s self-signed-certificates:certificates
 juju integrate sdcore-nrf-k8s:database mongodb-k8s
 juju integrate sdcore-pcf-k8s:fiveg_nrf sdcore-nrf-k8s:fiveg_nrf
 juju integrate sdcore-pcf-k8s:certificates self-signed-certificates:certificates
-juju integrate sdcore-pcf-k8s:sdcore-config sdcore-nms-k8s:sdcore-config
+juju integrate sdcore-pcf-k8s:sdcore_config sdcore-nms-k8s:sdcore_config
 ```
 
 ## Image
diff --git a/charmcraft.yaml b/charmcraft.yaml
index 087f43a..c5e4f69 100644
--- a/charmcraft.yaml
+++ b/charmcraft.yaml
@@ -41,7 +41,7 @@ requires:
     interface: tls-certificates
   logging:
       interface: loki_push_api
-  sdcore-config:
+  sdcore_config:
     interface: sdcore_config
 
 provides:
diff --git a/src/charm.py b/src/charm.py
index c358065..421e2f2 100755
--- a/src/charm.py
+++ b/src/charm.py
@@ -51,7 +51,7 @@
 CERTIFICATE_NAME = "pcf.pem"
 CERTIFICATE_COMMON_NAME = "pcf.sdcore"
 LOGGING_RELATION_NAME = "logging"
-SDCORE_CONFIG_RELATION_NAME = "sdcore-config"
+SDCORE_CONFIG_RELATION_NAME = "sdcore_config"
 WORKLOAD_VERSION_FILE_NAME = "/etc/workload-version"
 
 
diff --git a/terraform/outputs.tf b/terraform/outputs.tf
index 90ddbba..1019266 100644
--- a/terraform/outputs.tf
+++ b/terraform/outputs.tf
@@ -25,7 +25,7 @@ output "logging_endpoint" {
 
 output "sdcore_config_endpoint" {
   description = "Name of the endpoint used to integrate with the NMS."
-  value       = "sdcore-config"
+  value       = "sdcore_config"
 }
 
 # Provided integration endpoints
diff --git a/tests/integration/test_integration.py b/tests/integration/test_integration.py
index 40124fc..870925b 100644
--- a/tests/integration/test_integration.py
+++ b/tests/integration/test_integration.py
@@ -66,8 +66,8 @@ async def test_relate_and_wait_for_active_status(ops_test: OpsTest, deploy):
     )
     await ops_test.model.integrate(relation1=APPLICATION_NAME, relation2=TLS_CHARM_NAME)
     await ops_test.model.integrate(
-        relation1=f"{APPLICATION_NAME}:sdcore-config",
-        relation2=f"{NMS_CHARM_NAME}:sdcore-config",
+        relation1=f"{APPLICATION_NAME}:sdcore_config",
+        relation2=f"{NMS_CHARM_NAME}:sdcore_config",
     )
     await ops_test.model.integrate(
         relation1=f"{APPLICATION_NAME}:logging",
@@ -110,8 +110,8 @@ async def test_restore_nms_and_wait_for_active_status(ops_test: OpsTest, deploy)
     assert ops_test.model
     await _deploy_nms(ops_test)
     await ops_test.model.integrate(
-        relation1=f"{APPLICATION_NAME}:sdcore-config",
-        relation2=f"{NMS_CHARM_NAME}:sdcore-config",
+        relation1=f"{APPLICATION_NAME}:sdcore_config",
+        relation2=f"{NMS_CHARM_NAME}:sdcore_config",
     )
     await ops_test.model.wait_for_idle(apps=[APPLICATION_NAME], status="active", timeout=1000)
 
diff --git a/tests/unit/fixtures.py b/tests/unit/fixtures.py
index 4334ad0..cac7115 100644
--- a/tests/unit/fixtures.py
+++ b/tests/unit/fixtures.py
@@ -31,7 +31,7 @@
 PRIVATE_KEY_PATH = "support/TLS/pcf.key"
 VALID_NRF_URL = "https://nrf:443"
 WEBUI_URL = "sdcore-webui:9876"
-SDCORE_CONFIG_RELATION_NAME = "sdcore-config"
+SDCORE_CONFIG_RELATION_NAME = "sdcore_config"
 NMS_APPLICATION_NAME = "sdcore-nms-operator"
 
 
diff --git a/tests/unit/test_charm.py b/tests/unit/test_charm.py
index 1da3023..7ff7c17 100644
--- a/tests/unit/test_charm.py
+++ b/tests/unit/test_charm.py
@@ -31,7 +31,7 @@
 PRIVATE_KEY_PATH = "support/TLS/pcf.key"
 VALID_NRF_URL = "https://nrf:443"
 WEBUI_URL = "sdcore-webui:9876"
-SDCORE_CONFIG_RELATION_NAME = "sdcore-config"
+SDCORE_CONFIG_RELATION_NAME = "sdcore_config"
 
 
 class TestCharm(PCFUnitTestFixtures):
@@ -85,7 +85,7 @@ def test_given_container_can_connect_and_sdcore_config_relation_is_not_created_w
         self.harness.evaluate_status()
 
         assert self.harness.model.unit.status == BlockedStatus(
-            "Waiting for sdcore-config relation(s)"
+            "Waiting for sdcore_config relation(s)"
         )
 
     def test_given_pcf_charm_in_active_state_when_nrf_relation_breaks_then_status_is_blocked(
@@ -115,7 +115,7 @@ def test_given_pcf_charm_in_active_state_when_sdcore_config_relation_breaks_then
         self.harness.evaluate_status()
 
         assert self.harness.model.unit.status == BlockedStatus(
-            "Waiting for sdcore-config relation(s)"
+            "Waiting for sdcore_config relation(s)"
         )
 
     def test_given_container_can_connect_and_fiveg_nrf_relation_is_not_available_when_collect_status_then_status_is_waiting(  # noqa: E501