diff --git a/doc/src/sgml/syntax.sgml b/doc/src/sgml/syntax.sgml
index 140b3bd12e..47512f73df 100644
--- a/doc/src/sgml/syntax.sgml
+++ b/doc/src/sgml/syntax.sgml
@@ -1069,12 +1069,6 @@ SELECT (5 !) - 6;
        <entry>all other native and user-defined operators</entry>
       </row>
 
-      <row>
-       <entry><token>OVERLAPS</token></entry>
-       <entry></entry>
-       <entry>time interval overlap</entry>
-      </row>
-
       <row>
        <entry><token>BETWEEN</token> <token>IN</token> <token>LIKE</token> <token>ILIKE</token> <token>SIMILAR</token></entry>
        <entry></entry>
diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y
index 4e02f7d73f..3b5cef4ff4 100644
--- a/src/backend/parser/gram.y
+++ b/src/backend/parser/gram.y
@@ -673,7 +673,6 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
 %nonassoc	'<' '>' '=' LESS_EQUALS GREATER_EQUALS NOT_EQUALS
 %nonassoc	BETWEEN IN_P LIKE ILIKE SIMILAR NOT_LA
 %nonassoc	ESCAPE			/* ESCAPE must be just above LIKE/ILIKE/SIMILAR */
-%nonassoc	OVERLAPS
 %left		POSTFIXOP		/* dummy for postfix Op rules */
 /*
  * To support target_el without AS, we must give IDENT an explicit priority