diff --git a/contrib/intarray/_int_gist.c b/contrib/intarray/_int_gist.c
index f1817a6cce..ea79c4bb51 100644
--- a/contrib/intarray/_int_gist.c
+++ b/contrib/intarray/_int_gist.c
@@ -180,8 +180,10 @@ g_int_compress(PG_FUNCTION_ARGS)
 		PREPAREARR(r);
 
 		if (ARRNELEMS(r) >= 2 * num_ranges)
-			elog(NOTICE, "input array is too big (%d maximum allowed, %d current), use gist__intbig_ops opclass instead",
-				 2 * num_ranges - 1, ARRNELEMS(r));
+			ereport(ERROR,
+					(errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
+					 errmsg("input array is too big (%d maximum allowed, %d current), use gist__intbig_ops opclass instead",
+							2 * num_ranges - 1, ARRNELEMS(r))));
 
 		retval = palloc(sizeof(GISTENTRY));
 		gistentryinit(*retval, PointerGetDatum(r),
@@ -269,7 +271,8 @@ g_int_compress(PG_FUNCTION_ARGS)
 		lenr = internal_size(dr, len);
 		if (lenr < 0 || lenr > MAXNUMELTS)
 			ereport(ERROR,
-					(errmsg("data is too sparse, recreate index using gist__intbig_ops opclass instead")));
+					(errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
+					 errmsg("data is too sparse, recreate index using gist__intbig_ops opclass instead")));
 
 		r = resize_intArrayType(r, len);
 		retval = palloc(sizeof(GISTENTRY));
@@ -331,7 +334,8 @@ g_int_decompress(PG_FUNCTION_ARGS)
 	lenr = internal_size(din, lenin);
 	if (lenr < 0 || lenr > MAXNUMELTS)
 		ereport(ERROR,
-				(errmsg("compressed array is too big, recreate index using gist__intbig_ops opclass instead")));
+				(errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
+				 errmsg("compressed array is too big, recreate index using gist__intbig_ops opclass instead")));
 
 	r = new_intArrayType(lenr);
 	dr = ARRPTR(r);
diff --git a/contrib/intarray/expected/_int.out b/contrib/intarray/expected/_int.out
index a09d40efa1..7dd28ea145 100644
--- a/contrib/intarray/expected/_int.out
+++ b/contrib/intarray/expected/_int.out
@@ -547,6 +547,8 @@ SELECT count(*) from test__int WHERE a @@ '!20 & !21';
   6343
 (1 row)
 
+INSERT INTO test__int SELECT array(SELECT x FROM generate_series(1, 1001) x); -- should fail
+ERROR:  input array is too big (199 maximum allowed, 1001 current), use gist__intbig_ops opclass instead
 DROP INDEX text_idx;
 CREATE INDEX text_idx on test__int using gist (a gist__int_ops(numranges = 0));
 ERROR:  value 0 out of bounds for option "numranges"
diff --git a/contrib/intarray/sql/_int.sql b/contrib/intarray/sql/_int.sql
index b26fc57e4d..f8002c93fc 100644
--- a/contrib/intarray/sql/_int.sql
+++ b/contrib/intarray/sql/_int.sql
@@ -110,6 +110,8 @@ SELECT count(*) from test__int WHERE a @@ '(20&23)|(50&68)';
 SELECT count(*) from test__int WHERE a @@ '20 | !21';
 SELECT count(*) from test__int WHERE a @@ '!20 & !21';
 
+INSERT INTO test__int SELECT array(SELECT x FROM generate_series(1, 1001) x); -- should fail
+
 DROP INDEX text_idx;
 CREATE INDEX text_idx on test__int using gist (a gist__int_ops(numranges = 0));
 CREATE INDEX text_idx on test__int using gist (a gist__int_ops(numranges = 253));