diff --git a/expected/ruminv.out b/expected/ruminv.out
index 840dcfc85c..00d9db64cb 100644
--- a/expected/ruminv.out
+++ b/expected/ruminv.out
@@ -9,6 +9,7 @@ INSERT INTO test_invrum VALUES ('(a|b)&c'::tsquery);
 INSERT INTO test_invrum VALUES ('(!(a|b))&c'::tsquery);
 INSERT INTO test_invrum VALUES ('(a|b)&(c|d)'::tsquery);
 INSERT INTO test_invrum VALUES ('!a'::tsquery);
+INSERT INTO test_invrum VALUES ('a&!(b&c)'::tsquery);
 INSERT INTO test_invrum VALUES ('(a|a1|a2|a3|a4|a5)&(b|b1|b2|b3|b4|b5|b6)&!(c|c1|c2|c3)'::tsquery);
 SELECT * FROM test_invrum WHERE q @@ ''::tsvector;
        q        
@@ -20,12 +21,13 @@ SELECT * FROM test_invrum WHERE q @@ ''::tsvector;
 (4 rows)
 
 SELECT * FROM test_invrum WHERE q @@ 'a'::tsvector;
-       q        
-----------------
+          q           
+----------------------
  'a' | 'b'
  !( 'a' & 'b' )
  'a' & !'b'
-(3 rows)
+ 'a' & !( 'b' & 'c' )
+(4 rows)
 
 SELECT * FROM test_invrum WHERE q @@ 'b'::tsvector;
        q        
@@ -42,8 +44,9 @@ SELECT * FROM test_invrum WHERE q @@ 'a b'::tsvector;
  'a' | 'b'
  'a' & 'b'
  !'a' | 'b'
+ 'a' & !( 'b' & 'c' )
  ( 'a' | 'a1' | 'a2' | 'a3' | 'a4' | 'a5' ) & ( 'b' | 'b1' | 'b2' | 'b3' | 'b4' | 'b5' | 'b6' ) & !( 'c' | 'c1' | 'c2' | 'c3' )
-(4 rows)
+(5 rows)
 
 SELECT * FROM test_invrum WHERE q @@ 'c'::tsvector;
           q           
@@ -63,7 +66,8 @@ SELECT * FROM test_invrum WHERE q @@ 'a c'::tsvector;
  'a' & !'b'
  ( 'a' | 'b' ) & 'c'
  ( 'a' | 'b' ) & ( 'c' | 'd' )
-(5 rows)
+ 'a' & !( 'b' & 'c' )
+(6 rows)
 
 SELECT * FROM test_invrum WHERE q @@ 'b c'::tsvector;
                q               
@@ -102,7 +106,8 @@ SELECT * FROM test_invrum WHERE q @@ 'a d'::tsvector;
  !( 'a' & 'b' )
  'a' & !'b'
  ( 'a' | 'b' ) & ( 'c' | 'd' )
-(4 rows)
+ 'a' & !( 'b' & 'c' )
+(5 rows)
 
 SELECT * FROM test_invrum WHERE q @@ 'b d'::tsvector;
                q               
@@ -121,8 +126,9 @@ SELECT * FROM test_invrum WHERE q @@ 'a b d'::tsvector;
  'a' & 'b'
  !'a' | 'b'
  ( 'a' | 'b' ) & ( 'c' | 'd' )
+ 'a' & !( 'b' & 'c' )
  ( 'a' | 'a1' | 'a2' | 'a3' | 'a4' | 'a5' ) & ( 'b' | 'b1' | 'b2' | 'b3' | 'b4' | 'b5' | 'b6' ) & !( 'c' | 'c1' | 'c2' | 'c3' )
-(5 rows)
+(6 rows)
 
 SELECT * FROM test_invrum WHERE q @@ 'c d'::tsvector;
           q           
@@ -142,7 +148,8 @@ SELECT * FROM test_invrum WHERE q @@ 'a c d'::tsvector;
  'a' & !'b'
  ( 'a' | 'b' ) & 'c'
  ( 'a' | 'b' ) & ( 'c' | 'd' )
-(5 rows)
+ 'a' & !( 'b' & 'c' )
+(6 rows)
 
 CREATE INDEX test_invrum_idx ON test_invrum USING rum(q);
 SET enable_seqscan = OFF;
@@ -152,12 +159,13 @@ SELECT * FROM test_invrum WHERE q @@ ''::tsvector;
 (0 rows)
 
 SELECT * FROM test_invrum WHERE q @@ 'a'::tsvector;
-       q        
-----------------
+          q           
+----------------------
  'a' | 'b'
  !( 'a' & 'b' )
  'a' & !'b'
-(3 rows)
+ 'a' & !( 'b' & 'c' )
+(4 rows)
 
 SELECT * FROM test_invrum WHERE q @@ 'b'::tsvector;
        q        
@@ -216,7 +224,8 @@ SELECT * FROM test_invrum WHERE q @@ 'a b c'::tsvector;
  !'a' | 'b'
  ( 'a' | 'b' ) & 'c'
  ( 'a' | 'b' ) & ( 'c' | 'd' )
-(5 rows)
+ 'a' & !( 'b' & 'c' )
+(6 rows)
 
 SELECT * FROM test_invrum WHERE q @@ 'd'::tsvector;
        q        
@@ -234,7 +243,8 @@ SELECT * FROM test_invrum WHERE q @@ 'a d'::tsvector;
  !( 'a' & 'b' )
  'a' & !'b'
  ( 'a' | 'b' ) & ( 'c' | 'd' )
-(4 rows)
+ 'a' & !( 'b' & 'c' )
+(5 rows)
 
 SELECT * FROM test_invrum WHERE q @@ 'b d'::tsvector;
                q               
diff --git a/sql/ruminv.sql b/sql/ruminv.sql
index b1c8eba709..dc42d1b4ba 100644
--- a/sql/ruminv.sql
+++ b/sql/ruminv.sql
@@ -10,6 +10,7 @@ INSERT INTO test_invrum VALUES ('(a|b)&c'::tsquery);
 INSERT INTO test_invrum VALUES ('(!(a|b))&c'::tsquery);
 INSERT INTO test_invrum VALUES ('(a|b)&(c|d)'::tsquery);
 INSERT INTO test_invrum VALUES ('!a'::tsquery);
+INSERT INTO test_invrum VALUES ('a&!(b&c)'::tsquery);
 INSERT INTO test_invrum VALUES ('(a|a1|a2|a3|a4|a5)&(b|b1|b2|b3|b4|b5|b6)&!(c|c1|c2|c3)'::tsquery);
 
 SELECT * FROM test_invrum WHERE q @@ ''::tsvector;
diff --git a/src/rumtsquery.c b/src/rumtsquery.c
index 6c6b3c86d0..55aba65e8a 100644
--- a/src/rumtsquery.c
+++ b/src/rumtsquery.c
@@ -94,6 +94,7 @@ make_query_item_wrap(QueryItem *item, QueryItemWrap *parent, bool not)
 
 					wrap->type = QI_OPR;
 					wrap->oper = oper;
+					wrap->not = not;
 
 					make_query_item_wrap(item + item->qoperator.left, wrap, not);
 					make_query_item_wrap(item + 1, wrap, not);

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