diff --git a/.changeset/good-scissors-doubt.md b/.changeset/good-scissors-doubt.md
new file mode 100644
index 0000000000..ee085be51e
--- /dev/null
+++ b/.changeset/good-scissors-doubt.md
@@ -0,0 +1,5 @@
+---
+'@backstage/backend-common': patch
+---
+
+Correct error message typo
diff --git a/packages/backend-common/src/service/lib/config.ts b/packages/backend-common/src/service/lib/config.ts
index 77ef925403..c14fb1af2f 100644
--- a/packages/backend-common/src/service/lib/config.ts
+++ b/packages/backend-common/src/service/lib/config.ts
@@ -78,7 +78,7 @@ export function readBaseOptions(config: Config): BaseOptions {
     typeof port !== 'string'
   ) {
     throw new Error(
-      `Invalid type in config for key 'backend.listen.post', got ${typeof port}, wanted string or number`,
+      `Invalid type in config for key 'backend.listen.port', got ${typeof port}, wanted string or number`,
     );
   }