diff --git a/src/bin/pg_dump/pg_backup_archiver.c b/src/bin/pg_dump/pg_backup_archiver.c
index f961162f365..afa42337b11 100644
--- a/src/bin/pg_dump/pg_backup_archiver.c
+++ b/src/bin/pg_dump/pg_backup_archiver.c
@@ -2469,7 +2469,7 @@ _allocAH(const char *FileSpec, const ArchiveFormat fmt,
 			break;
 
 		default:
-			pg_fatal("unrecognized file format \"%d\"", fmt);
+			pg_fatal("unrecognized file format \"%d\"", AH->format);
 	}
 
 	return AH;