# UNDF: UNDF-2026-000000116
--- a/src/jamidht/conversation_module.cpp
+++ b/src/jamidht/conversation_module.cpp
@@ -2338,8 +2338,7 @@ ConversationModule::syncConversations(const std::string& peer, const std::string
         } else if (!conv->info.isRemoved()
-                   && std::find(conv->info.members.begin(), conv->info.members.end(), peer)
-                          != conv->info.members.end()) {
+                   && conv->info.members.count(peer) > 0) {
             // In this case the conversation was never cloned (can be after an import)
             toClone.emplace(conv->info.id);
         }
@@ -2498,8 +2498,7 @@ ConversationModule::needsSyncingWith(const std::string& memberUri) const
         } else if (!ci->info.removed
-                   && std::find(ci->info.members.begin(), ci->info.members.end(), memberUri) != ci->info.members.end()) {
+                   && ci->info.members.count(memberUri) > 0) {
             // In this case the conversation was never cloned (can be after an import)
             return true;
         }
@@ -2794,8 +2794,7 @@ ConversationModule::removeContact(...)
     auto removeConvInfo = [&](const auto& conv, const auto& members) {
         if ((isSelf && members.size() == 1)
-            || (!isSelf && std::find(members.begin(), members.end(), uri) != members.end())) {
+            || (!isSelf && members.count(uri) > 0)) {