diff --git a/firmware.sh b/firmware.sh
index 1ccae17..4cf4b8d 100644
--- a/firmware.sh
+++ b/firmware.sh
@@ -69,11 +69,13 @@ if test "$1" = "--find-supplements" -a -n "$cache" ; then
 			/sbin/modinfo -F firmware "$ko" | sed -e "s@\$@ $ko@"
 		done > $cache
 	fi
-	while read fw ; do
+	hits=$(while read fw ; do
 		sed -n -e "s@^${fw#$RPM_BUILD_ROOT/lib/firmware/} @@p" < "$cache"
-	done | sort | \
-	RPMBUILD_SPECFILE=/dev/null /usr/lib/rpm/find-supplements.ksyms | \
-	sed 's/^modalias(kernel-[^:]*:/modalias(/' # strip the kernel-$flavor: prefix
+	done | sort)
+	if test -n "$hits"; then
+	    echo "$hits" | RPMBUILD_SPECFILE=/dev/null /usr/lib/rpm/find-supplements.ksyms | \
+	    sed 's/^modalias(kernel-[^:]*:/modalias(/' # strip the kernel-$flavor: prefix
+	fi
 	exit 0
 fi