diff --git a/common/xbps-src/shutils/common.sh b/common/xbps-src/shutils/common.sh
index 718409775c2..8035cb4d67a 100644
--- a/common/xbps-src/shutils/common.sh
+++ b/common/xbps-src/shutils/common.sh
@@ -128,6 +128,8 @@ set_build_options() {
         optval=${options[$f]}
         if [[ $optval -eq 1 ]]; then
             eval export build_option_${f}=1
+        else
+            eval unset build_option_${f}
         fi
     done