diff --git a/mysql-test/r/skip_records_in_range.result b/mysql-test/r/skip_records_in_range.result
index e9a622f52f3..18fa3a3bdb9 100644
--- a/mysql-test/r/skip_records_in_range.result
+++ b/mysql-test/r/skip_records_in_range.result
@@ -528,3 +528,19 @@ select * from v1;
 v3
 DROP VIEW v1;
 DROP TABLE t1;
+#
+# Bug #117750: FORCE INDEX does not skip records_in_range() for 'x IS NOT NULL'
+#
+CREATE TABLE t1 (c1 INT, KEY (c1));
+INSERT INTO t1 VALUES (1), (2), (3), (4), (5), (6), (7), (8), (NULL), (NULL);
+ANALYZE TABLE t1;
+Table	Op	Msg_type	Msg_text
+test.t1	analyze	status	OK
+set debug='+d,crash_records_in_range';
+EXPLAIN SELECT * FROM t1 FORCE INDEX(c1) WHERE c1 IS NOT NULL;
+id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t1	NULL	range	c1	c1	5	NULL	1	100.00	Using where; Using index
+Warnings:
+Note	1003	/* select#1 */ select `test`.`t1`.`c1` AS `c1` from `test`.`t1` FORCE INDEX (`c1`) where (`test`.`t1`.`c1` is not null)
+set debug='-d,crash_records_in_range';
+DROP TABLE t1;
diff --git a/mysql-test/t/skip_records_in_range.test b/mysql-test/t/skip_records_in_range.test
index 09da3de714f..0b3acec955c 100644
--- a/mysql-test/t/skip_records_in_range.test
+++ b/mysql-test/t/skip_records_in_range.test
@@ -116,3 +116,19 @@ eval $query1;
 
 DROP VIEW v1;
 DROP TABLE t1;
+
+--echo #
+--echo # Bug 117750#: FORCE INDEX does not skip records_in_range() for 'x IS NOT NULL'
+--echo #
+
+CREATE TABLE t1 (c1 INT, KEY (c1));
+INSERT INTO t1 VALUES (1), (2), (3), (4), (5), (6), (7), (8), (NULL), (NULL);
+ANALYZE TABLE t1;
+
+set debug='+d,crash_records_in_range';
+
+EXPLAIN SELECT * FROM t1 FORCE INDEX(c1) WHERE c1 IS NOT NULL;
+
+set debug='-d,crash_records_in_range';
+
+DROP TABLE t1;
diff --git a/sql/range_optimizer/tree.h b/sql/range_optimizer/tree.h
index 2d1eaf83653..71ae273046a 100644
--- a/sql/range_optimizer/tree.h
+++ b/sql/range_optimizer/tree.h
@@ -579,7 +579,9 @@ class SEL_ARG {
   inline void merge_flags(SEL_ARG *arg) { maybe_flag |= arg->maybe_flag; }
   inline void maybe_smaller() { maybe_flag = true; }
   /* Return true iff it's a single-point null interval */
-  inline bool is_null_interval() { return maybe_null() && max_value[0] == 1; }
+  inline bool is_null_interval() {
+    return !(max_flag & NO_MAX_RANGE) && maybe_null() && max_value[0] == 1;
+  }
   inline int cmp_min_to_min(const SEL_ARG *arg) const {
     return sel_cmp(field, min_value, arg->min_value, min_flag, arg->min_flag);
   }