diff --git a/examples/common/config/OcppConfig.cpp b/examples/common/config/OcppConfig.cpp
index 3c53f5a9..6c4db9be 100644
--- a/examples/common/config/OcppConfig.cpp
+++ b/examples/common/config/OcppConfig.cpp
@@ -200,8 +200,8 @@ ocpp::types::ConfigurationStatus OcppConfig::setConfiguration(const std::string&
             std::size_t key_is_interval = key.find("Interval");
             if (key_is_interval != std::string::npos)
             {
-                std::size_t value_is_negative = key.find("-");
-                if (value_is_negative)
+                std::size_t value_is_negative = value.find("-");
+                if (value_is_negative != std::string::npos)
                 {
                     ret = ConfigurationStatus::Rejected;
                 }
diff --git a/src/rpc/RpcBase.cpp b/src/rpc/RpcBase.cpp
index 65afaa16..dcfd978a 100644
--- a/src/rpc/RpcBase.cpp
+++ b/src/rpc/RpcBase.cpp
@@ -231,6 +231,7 @@ void RpcBase::start()
         {
             // Start reception thread
             m_requests_queue.setEnable(true);
+            m_results_queue.setEnable(true);
             m_rx_thread = new std::thread(std::bind(&RpcBase::rxThread, this));
         }
     }
diff --git a/src/types/DateTime.h b/src/types/DateTime.h
index 1ba8f79f..13a67006 100644
--- a/src/types/DateTime.h
+++ b/src/types/DateTime.h
@@ -84,7 +84,6 @@ class DateTime
             m_datetime = _mkgmtime(&t);
 #else  // _MSC_VER
             m_datetime = std::mktime(&t);
-            m_datetime += t.tm_gmtoff;
             m_datetime -= (t.tm_isdst * 3600);
 #endif // _MSC_VER
             ret = true;
@@ -179,7 +178,7 @@ class DateTime
 #ifdef _MSC_VER
         gmtime_s(&t, &m_datetime);
 #else  // _MSC_VER
-        gmtime_r(&m_datetime, &t);
+        localtime_r(&m_datetime, &t);
 #endif // _MSC_VER
         ss << std::put_time(&t, "%Y-%m-%dT%TZ");
         return ss.str();