diff --git a/litellm/proxy/guardrails/guardrail_hooks/promptguard/promptguard.py b/litellm/proxy/guardrails/guardrail_hooks/promptguard/promptguard.py
index 8c5001249ad..d9c4ecb61ae 100644
--- a/litellm/proxy/guardrails/guardrail_hooks/promptguard/promptguard.py
+++ b/litellm/proxy/guardrails/guardrail_hooks/promptguard/promptguard.py
@@ -157,10 +157,7 @@ class PromptGuardGuardrail(CustomGuardrail):
             if self.block_on_error:
                 raise GuardrailRaisedException(
                     guardrail_name=self.guardrail_name,
-                    message=(
-                        f"PromptGuard API unreachable "
-                        f"(block_on_error=True): {exc}"
-                    ),
+                    message=f"PromptGuard API unreachable (block_on_error=True): {exc}",
                 ) from exc
             return inputs