diff --git a/packages/astro/src/core/routing/manifest/create.ts b/packages/astro/src/core/routing/manifest/create.ts
index 7e5d530823115..720a2deaac42b 100644
--- a/packages/astro/src/core/routing/manifest/create.ts
+++ b/packages/astro/src/core/routing/manifest/create.ts
@@ -460,7 +460,7 @@ export function createRouteManifest(
 				destination = to.destination
 			}
 			if (destination.startsWith("http")) {
-				return logger.error('redirects', `Redirecting to an external URLs is not supported: ${from} -> ${to}`);
+				return logger.error('redirects', `Redirecting to an external URL is not supported: ${from} -> ${to}`);
 			}
 		}