This article discusses the occurrence of voids in the intersection between Hebrew and Israeli Sign Language (ISL). Using Weizman's classification of voids (2010, 2016) in our analysis, we have discovered that languages that employ visual and auditory modalities make use of an additional category of voids: modality-induced voids. Our corpus consists of assignments on voids that were given during an academic ISL interpreting program from 2014 to 2016. Students were asked to suggest voids that were found in a comparison of ISL and Hebrew. We validated the voids with ISL users, both Deaf people and hearing interpreters, and used an online ISL dictionary as an aid.