In this paper, and approach to indicate the redundant input fuzzy sets of the fuzzy rule base of the single input single output Easy-T type fuzzy controllers is proposed. The main idea is to modify the membership functions of fuzzy sets of input variables of the Easy-T type fuzzy controllers to point out the redundant fuzzy sets. The equivalent fuzzy controllers of the Easy-T type fuzzy controllers are constructed to have the redundant fuzzy sets been taken off. Thus, less number of fuzzy if-then rules are needed for the fuzzy rule base of the equivalent fuzzy controllers. The justification of this modification approach is provided to show that the equivalent fuzzy controllers and original Easy-T type fuzzy controllers have the same input-output mappings.