diff --git a/azurerm/internal/services/eventhub/eventhub_namespace_authorization_rule_resource.go b/azurerm/internal/services/eventhub/eventhub_namespace_authorization_rule_resource.go
index 03b4d22a16ad..2a26651d4c7a 100644
--- a/azurerm/internal/services/eventhub/eventhub_namespace_authorization_rule_resource.go
+++ b/azurerm/internal/services/eventhub/eventhub_namespace_authorization_rule_resource.go
@@ -29,13 +29,18 @@ func resourceArmEventHubNamespaceAuthorizationRule() *schema.Resource {
 			State: schema.ImportStatePassthrough,
 		},
 
-		SchemaVersion: 1,
+		SchemaVersion: 2,
 		StateUpgraders: []schema.StateUpgrader{
 			{
 				Type:    migration.EventHubNamespaceAuthorizationRuleUpgradeV0Schema().CoreConfigSchema().ImpliedType(),
 				Upgrade: migration.EventHubNamespaceAuthorizationRuleUpgradeV0ToV1,
 				Version: 0,
 			},
+			{
+				Type:    migration.EventHubNamespaceAuthorizationRuleUpgradeV1Schema().CoreConfigSchema().ImpliedType(),
+				Upgrade: migration.EventHubNamespaceAuthorizationRuleUpgradeV1ToV2,
+				Version: 1,
+			},
 		},
 
 		Timeouts: &schema.ResourceTimeout{
diff --git a/azurerm/internal/services/eventhub/migration/namespace_authorization_rule_v1.go b/azurerm/internal/services/eventhub/migration/namespace_authorization_rule_v1.go
new file mode 100644
index 000000000000..605cebb0d03a
--- /dev/null
+++ b/azurerm/internal/services/eventhub/migration/namespace_authorization_rule_v1.go
@@ -0,0 +1,41 @@
+package migration
+
+import (
+	"log"
+	"strings"
+
+	"github.com/hashicorp/terraform-plugin-sdk/helper/schema"
+	"github.com/terraform-providers/terraform-provider-azurerm/azurerm/helpers/azure"
+)
+
+func EventHubNamespaceAuthorizationRuleUpgradeV1Schema() *schema.Resource {
+	return &schema.Resource{
+		Schema: map[string]*schema.Schema{
+			"name": {
+				Type:     schema.TypeString,
+				Required: true,
+				ForceNew: true,
+			},
+
+			"namespace_name": {
+				Type:     schema.TypeString,
+				Required: true,
+				ForceNew: true,
+			},
+
+			"resource_group_name": azure.SchemaResourceGroupName(),
+		},
+	}
+}
+
+func EventHubNamespaceAuthorizationRuleUpgradeV1ToV2(rawState map[string]interface{}, meta interface{}) (map[string]interface{}, error) {
+	oldId := rawState["id"].(string)
+
+	newId := strings.Replace(rawState["id"].(string), "/AuthorizationRules/", "/authorizationRules/", 1)
+
+	log.Printf("[DEBUG] Updating ID from %q to %q", oldId, newId)
+
+	rawState["id"] = newId
+
+	return rawState, nil
+}
diff --git a/azurerm/internal/services/eventhub/parse/namespace_authorization_rule.go b/azurerm/internal/services/eventhub/parse/namespace_authorization_rule.go
index fe5c0442f964..c3453785a204 100644
--- a/azurerm/internal/services/eventhub/parse/namespace_authorization_rule.go
+++ b/azurerm/internal/services/eventhub/parse/namespace_authorization_rule.go
@@ -22,7 +22,7 @@ func NamespaceAuthorizationRuleID(input string) (*NamespaceAuthorizationRuleId,
 		return nil, err
 	}
 
-	if rule.Name, err = id.PopSegment("AuthorizationRules"); err != nil {
+	if rule.Name, err = id.PopSegment("authorizationRules"); err != nil {
 		return nil, err
 	}
 
diff --git a/azurerm/internal/services/eventhub/parse/namespace_authorization_rule_test.go b/azurerm/internal/services/eventhub/parse/namespace_authorization_rule_test.go
index 3723d78076fe..eae18be19847 100644
--- a/azurerm/internal/services/eventhub/parse/namespace_authorization_rule_test.go
+++ b/azurerm/internal/services/eventhub/parse/namespace_authorization_rule_test.go
@@ -42,13 +42,13 @@ func TestNamespaceAuthorizationRuleID(t *testing.T) {
 			Error: true,
 		},
 		{
-			Name:  "Missing AuthorizationRules Key",
-			Input: "/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/group1/providers/Microsoft.EventHub/namespaces/namespace1/AuthorizationRules",
+			Name:  "Missing authorizationRules Key",
+			Input: "/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/group1/providers/Microsoft.EventHub/namespaces/namespace1/authorizationRules",
 			Error: true,
 		},
 		{
 			Name:  "Namespace Authorization Rule ID",
-			Input: "/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/group1/providers/Microsoft.EventHub/namespaces/namespace1/AuthorizationRules/rule1",
+			Input: "/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/group1/providers/Microsoft.EventHub/namespaces/namespace1/authorizationRules/rule1",
 			Error: false,
 			Expect: &NamespaceAuthorizationRuleId{
 				ResourceGroup: "group1",
@@ -58,7 +58,7 @@ func TestNamespaceAuthorizationRuleID(t *testing.T) {
 		},
 		{
 			Name:  "Wrong Casing",
-			Input: "/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/group1/providers/Microsoft.EventHub/namespaces/namespace1/authorizationRules/rule1",
+			Input: "/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/group1/providers/Microsoft.EventHub/namespaces/namespace1/AuthorizationRules/rule1",
 			Error: true,
 		},
 	}
diff --git a/website/docs/r/eventhub_namespace_authorization_rule.html.markdown b/website/docs/r/eventhub_namespace_authorization_rule.html.markdown
index ddc5ae515195..77e40c70b550 100644
--- a/website/docs/r/eventhub_namespace_authorization_rule.html.markdown
+++ b/website/docs/r/eventhub_namespace_authorization_rule.html.markdown
@@ -93,5 +93,5 @@ The `timeouts` block allows you to specify [timeouts](https://www.terraform.io/d
 EventHub Namespace Authorization Rules can be imported using the `resource id`, e.g.
 
 ```shell
-$ terraform import azurerm_eventhub_namespace_authorization_rule.example /subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/group1/providers/Microsoft.EventHub/namespaces/namespace1/AuthorizationRules/rule1
+$ terraform import azurerm_eventhub_namespace_authorization_rule.example /subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/group1/providers/Microsoft.EventHub/namespaces/namespace1/authorizationRules/rule1
 ```