diff --git a/src/test/isolation/Makefile b/src/test/isolation/Makefile
index 91307e1a7e8..ade2256ed3a 100644
--- a/src/test/isolation/Makefile
+++ b/src/test/isolation/Makefile
@@ -72,6 +72,3 @@ installcheck-prepared-txns: all temp-install
 
 check-prepared-txns: all temp-install
 	$(pg_isolation_regress_check) --schedule=$(srcdir)/isolation_schedule prepared-transactions prepared-transactions-cic
-
-check-timeouts: all temp-install
-	$(pg_isolation_regress_check) timeouts timeouts-long