diff --git a/src/bin/pg_basebackup/streamutil.c b/src/bin/pg_basebackup/streamutil.c
index 1b90057..57a1ff9 100644
--- a/src/bin/pg_basebackup/streamutil.c
+++ b/src/bin/pg_basebackup/streamutil.c
@@ -313,6 +313,7 @@ RetrieveWalSegSize(PGconn *conn)
 	if (sscanf(PQgetvalue(res, 0, 0), "%d%s", &xlog_val, xlog_unit) != 2)
 	{
 		pg_log_error("WAL segment size could not be parsed");
+		PQclear(res);
 		return false;
 	}
 
@@ -331,6 +332,7 @@ RetrieveWalSegSize(PGconn *conn)
 							  "WAL segment size must be a power of two between 1 MB and 1 GB, but the remote server reported a value of %d bytes",
 							  WalSegSz),
 					 WalSegSz);
+		PQclear(res);
 		return false;
 	}