diff --git a/src/tirith/providers/terraform_plan/handler.py b/src/tirith/providers/terraform_plan/handler.py
index 3b7a316..4bedafb 100644
--- a/src/tirith/providers/terraform_plan/handler.py
+++ b/src/tirith/providers/terraform_plan/handler.py
@@ -204,7 +204,7 @@ def provider_config_operator(input_data: dict, provider_inputs: dict, outputs: l
         outputs.append(
             {
                 "value": ProviderError(severity_value=99),
-                "err": "`terraform_provider_full_name` must be provided in the provider input (severity_value: 99))",
+                "err": "`terraform_provider_full_name` must be provided in the provider input (severity_value: 99)",
             }
         )
         return
@@ -274,7 +274,7 @@ def direct_dependencies_operator(input_data: dict, provider_inputs: dict, output
         outputs.append(
             {
                 "value": ProviderError(severity_value=99),
-                "err": "`terraform_resource_type` must be provided in the provider input (severity_value: 99))",
+                "err": "`terraform_resource_type` must be provided in the provider input (severity_value: 99)",
             }
         )
         return
@@ -453,7 +453,7 @@ def direct_references_operator(input_data: dict, provider_inputs: dict, outputs:
         outputs.append(
             {
                 "value": ProviderError(severity_value=99),
-                "err": "Only one of `referenced_by` or `references_to` must be provided in the provider input (severity_value: 99))",
+                "err": "Only one of `referenced_by` or `references_to` must be provided in the provider input (severity_value: 99)",
             }
         )
         return
@@ -471,7 +471,7 @@ def direct_references_operator(input_data: dict, provider_inputs: dict, outputs:
         outputs.append(
             {
                 "value": ProviderError(severity_value=99),
-                "err": "`terraform_resource_type` must be provided in the provider input (severity_value: 99))",
+                "err": "`terraform_resource_type` must be provided in the provider input (severity_value: 99)",
             }
         )
         return
diff --git a/tests/providers/terraform_plan/test_direct_references.py b/tests/providers/terraform_plan/test_direct_references.py
index 293d63a..81a1c3c 100644
--- a/tests/providers/terraform_plan/test_direct_references.py
+++ b/tests/providers/terraform_plan/test_direct_references.py
@@ -79,7 +79,7 @@ def test_direct_references_to_and_by_should_raise_error():
         "Only one of `referenced_by` or "
         "`references_to` must be provided in "
         "the provider input (severity_value: "
-        "99))"
+        "99)"
     )