diff --git a/xbps-src/shutils/configure_funcs.sh b/xbps-src/shutils/configure_funcs.sh
index 0b295a7aa0..382397ed5e 100644
--- a/xbps-src/shutils/configure_funcs.sh
+++ b/xbps-src/shutils/configure_funcs.sh
@@ -130,6 +130,7 @@ configure_src_phase()
 	for f in ${configure_env}; do
 		unset eval ${f%=*}
 	done
+	unset_build_vars
 
 	touch -f $XBPS_CONFIGURE_DONE
 }