diff --git a/src/persistence/historykeeper.cpp b/src/persistence/historykeeper.cpp
index 0c0a2bb36..4519807f8 100644
--- a/src/persistence/historykeeper.cpp
+++ b/src/persistence/historykeeper.cpp
@@ -59,6 +59,7 @@ HistoryKeeper *HistoryKeeper::getInstance()
             dbIntf = new EncryptedDb(path, initLst);
 
             historyInstance = new HistoryKeeper(dbIntf);
+            historyMutex.unlock();
             return historyInstance;
         }
         else