diff --git a/libtransport/LocalBuddy.cpp b/libtransport/LocalBuddy.cpp
index 8a0e0aef523b4c4faffd930be0c3053c1964168d..f3b501d24f17cdeccbad9e95daeec39c6876a5ea 100644
--- a/libtransport/LocalBuddy.cpp
+++ b/libtransport/LocalBuddy.cpp
@@ -86,7 +86,7 @@ void LocalBuddy::setAlias(const std::string &alias) {
 void LocalBuddy::setGroups(const std::vector<std::string> &groups) {
 	bool changed = m_groups.size() != groups.size();
 	if (!changed) {
-		for (int i = 0; i != m_groups.size(); i++) {
+		for (unsigned i = 0; i != m_groups.size(); i++) {
 			if (m_groups[i] != groups[i]) {
 				changed = true;
 				break;