diff --git a/src/parray_gin.c b/src/parray_gin.c
index 69e01f5..6f337f7 100644
--- a/src/parray_gin.c
+++ b/src/parray_gin.c
@@ -645,6 +645,7 @@ parray_gin_extract_query(PG_FUNCTION_ARGS)
 	bool	  **pmatch = (bool **) PG_GETARG_POINTER(3);
 	Pointer   **extra_data = (Pointer **) PG_GETARG_POINTER(4);
 	bool	  **nullFlags = (bool **) PG_GETARG_POINTER(5);
+	int32     *searchMode = (int32 *) PG_GETARG_POINTER(6);
 
 	Datum	   *keys;
 	bool		is_partial;
@@ -671,6 +672,12 @@ parray_gin_extract_query(PG_FUNCTION_ARGS)
 	*nullFlags = NULL;
 	*pmatch = NULL;
 
+	/*
+	 * If no trigram was extracted then we have to scan all the index.
+	 */
+	if (*nkeys == 0)
+		*searchMode = GIN_SEARCH_MODE_ALL;
+
 	PG_RETURN_POINTER(keys);
 }
 
diff --git a/test/expected/index.out b/test/expected/index.out
index 5625688..b8bc636 100644
--- a/test/expected/index.out
+++ b/test/expected/index.out
@@ -71,7 +71,7 @@ select count(*) from test_table where val @> array['%'];
 0
 -- 0
 select count(*) from test_table where val @@> array['%'];
-0
+32
 -- 3
 select count(*) from test_table where val <@ array['foo4', 'bar4', 'baz4'];
 3