diff --git a/src/main/java/dev/struchkov/haiti/filter/jooq/CriteriaJooqQuery.java b/src/main/java/dev/struchkov/haiti/filter/jooq/CriteriaJooqQuery.java
index ef462f2..f5c092a 100644
--- a/src/main/java/dev/struchkov/haiti/filter/jooq/CriteriaJooqQuery.java
+++ b/src/main/java/dev/struchkov/haiti/filter/jooq/CriteriaJooqQuery.java
@@ -136,16 +136,6 @@ public class CriteriaJooqQuery {
         return this;
     }
 
-    public CriteriaJooqQuery isNull(String field) {
-        conditions.add(DSL.field(field).isNull());
-        return this;
-    }
-
-    public CriteriaJooqQuery isNotNull(String field) {
-        conditions.add(DSL.field(field).isNotNull());
-        return this;
-    }
-
     public CriteriaJooqQuery like(String field, String value, boolean ignoreCase) {
         Inspector.isNotNull(field);
         final Field<Object> query = field(field);