diff --git a/src/bin/pg_amcheck/pg_amcheck.c b/src/bin/pg_amcheck/pg_amcheck.c
index 8ae0d7c77c4..0f5c750cdf6 100644
--- a/src/bin/pg_amcheck/pg_amcheck.c
+++ b/src/bin/pg_amcheck/pg_amcheck.c
@@ -579,7 +579,7 @@ main(int argc, char *argv[])
 
 			executeCommand(conn, install_sql, opts.echo);
 			pfree(install_sql);
-			pfree(schema);
+			PQfreemem(schema);
 		}
 
 		/*