Three bicomponent mixtures coming from the system in which antiferroelectric phase is obtained by induction as well as compound having antiferroelectric phase by itself were dopped with different cyanoterminated compounds. The influence of dopants structure on the stabilization of antiferroelectric and induced antiferroelectric phase have been tested by miscibility method in the range up to 0.2 molar fraction of dopants. Very small destabilization of antiferroelectric phase for several cyanoterminated dopants in this range is observed. Longer rigid core and longer terminal chain favour stabilization of antiferroelectric phase.