diff --git a/mysql-test/main/subselect_mat.result b/mysql-test/main/subselect_mat.result
index c5b201c6f46..286b3d40ac1 100644
--- a/mysql-test/main/subselect_mat.result
+++ b/mysql-test/main/subselect_mat.result
@@ -2699,6 +2699,19 @@ INSERT INTO t3 VALUES ('2012-11-11',5),('2012-12-12',6);
 UPDATE t1, t2 SET t1.a = 26 WHERE t2.b IN (SELECT MIN(d) FROM t3 WHERE c >= '2012-01');
 ERROR 22007: Incorrect datetime value: '2012-01' for column `test`.`t3`.`c` at row 1
 DROP TABLE t1, t2, t3;
+#
+# MDEV-32612 Assertion `tab->select->quick' failed in test_if_skip_sort_order
+#
+CREATE TABLE t1 (l_orderkey int, l_linenumber int, l_quantity double, 
+PRIMARY KEY (l_orderkey,l_linenumber), KEY (l_orderkey),
+KEY (l_orderkey,l_quantity)) engine=MyISAM;
+INSERT INTO t1 VALUES (290,1,35),(290,2,2);
+SELECT * FROM t1 
+WHERE l_quantity = 31
+AND (l_quantity = 50 OR l_orderkey = 41)
+ORDER BY l_orderkey, l_linenumber;
+l_orderkey	l_linenumber	l_quantity
+DROP TABLE t1;
 # end of 10.6 tests
 set @subselect_mat_test_optimizer_switch_value=null;
 set @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=off';
diff --git a/mysql-test/main/subselect_sj_mat.result b/mysql-test/main/subselect_sj_mat.result
index 5d09af61892..277ce9a4408 100644
--- a/mysql-test/main/subselect_sj_mat.result
+++ b/mysql-test/main/subselect_sj_mat.result
@@ -2741,4 +2741,17 @@ INSERT INTO t3 VALUES ('2012-11-11',5),('2012-12-12',6);
 UPDATE t1, t2 SET t1.a = 26 WHERE t2.b IN (SELECT MIN(d) FROM t3 WHERE c >= '2012-01');
 ERROR 22007: Incorrect datetime value: '2012-01' for column `test`.`t3`.`c` at row 1
 DROP TABLE t1, t2, t3;
+#
+# MDEV-32612 Assertion `tab->select->quick' failed in test_if_skip_sort_order
+#
+CREATE TABLE t1 (l_orderkey int, l_linenumber int, l_quantity double, 
+PRIMARY KEY (l_orderkey,l_linenumber), KEY (l_orderkey),
+KEY (l_orderkey,l_quantity)) engine=MyISAM;
+INSERT INTO t1 VALUES (290,1,35),(290,2,2);
+SELECT * FROM t1 
+WHERE l_quantity = 31
+AND (l_quantity = 50 OR l_orderkey = 41)
+ORDER BY l_orderkey, l_linenumber;
+l_orderkey	l_linenumber	l_quantity
+DROP TABLE t1;
 # end of 10.6 tests
diff --git a/mysql-test/main/subselect_sj_mat.test b/mysql-test/main/subselect_sj_mat.test
index 0b5cfd6ab7b..7a218bde172 100644
--- a/mysql-test/main/subselect_sj_mat.test
+++ b/mysql-test/main/subselect_sj_mat.test
@@ -2436,4 +2436,18 @@ UPDATE t1, t2 SET t1.a = 26 WHERE t2.b IN (SELECT MIN(d) FROM t3 WHERE c >= '201
 # Cleanup
 DROP TABLE t1, t2, t3;
 
+--echo #
+--echo # MDEV-32612 Assertion `tab->select->quick' failed in test_if_skip_sort_order
+--echo #
+
+CREATE TABLE t1 (l_orderkey int, l_linenumber int, l_quantity double, 
+  PRIMARY KEY (l_orderkey,l_linenumber), KEY (l_orderkey),
+  KEY (l_orderkey,l_quantity)) engine=MyISAM;
+INSERT INTO t1 VALUES (290,1,35),(290,2,2);
+SELECT * FROM t1 
+WHERE l_quantity = 31
+AND (l_quantity = 50 OR l_orderkey = 41)
+ORDER BY l_orderkey, l_linenumber;
+DROP TABLE t1;
+
 --echo # end of 10.6 tests
diff --git a/sql/sql_select.cc b/sql/sql_select.cc
index 0c8432afd91..a351322e76b 100644
--- a/sql/sql_select.cc
+++ b/sql/sql_select.cc
@@ -24750,14 +24750,14 @@ test_if_skip_sort_order(JOIN_TAB *tab,ORDER *order,ha_rows select_limit,
                                           tab->join->unit->
                                             lim.get_select_limit(),
                                           TRUE, TRUE, FALSE, FALSE);
-          if (res != SQL_SELECT::OK)
+          // if we cannot use quick select
+          if (res != SQL_SELECT::OK || !tab->select->quick)
           {
             if (res == SQL_SELECT::ERROR)
               *fatal_error= true;
             select->cond= save_cond;
             goto use_filesort;
           }
-          DBUG_ASSERT(tab->select->quick);
           tab->type= JT_ALL;
           tab->ref.key= -1;
           tab->ref.key_parts= 0;