Software engineers often need to identify and correct design defects, i.e., recurring design problems that hinder development and maintenance by making programs harder to comprehend and/or evolve. While detection of design defects is actively researched area, their correction -- mainly a manual and time-consuming activity -- is yet to be extensively investigated for automation. In this paper, we propose an automated approach for suggesting defect-correcting refactorings based on relational concept analysis (RCA). The added value of RCA consists in exploiting the links between formal objects which abound in a software re-engineering context. We validated our approach on instances of the 'Blob' design defect taken from four different open-source programs.