diff --git a/openup b/openup
index 58b5346..f585a80 100755
--- a/openup
+++ b/openup
@@ -58,10 +58,10 @@ if ! grep -q installpath /etc/pkg.conf 2>/dev/null; then
 fi
 
 # check that we have no installed binpatches from a previous release
-_BPLIST=$(pkg_info -q |grep binpatch)
+_BPLIST=$(pkg_info -q | grep "^binpatch")
 if [ -n "${_BPLIST}" ]; then
 	_i=$(echo ${_BPLIST} | wc -w)
-	_v=$(echo ${_BPLIST} | grep binpatch${REL_INT} | wc -w)
+	_v=$(echo ${_BPLIST} | grep "^binpatch${REL_INT}" | wc -w)
 	if [ "${_i}" -ne "${_v}" ]; then
 		error "Binpatch(es) from a previous release installed"
 	fi