diff --git a/src/svxlink/svxlink/ReflectorLogic.cpp b/src/svxlink/svxlink/ReflectorLogic.cpp
index 02c5e6c6..723f5f79 100644
--- a/src/svxlink/svxlink/ReflectorLogic.cpp
+++ b/src/svxlink/svxlink/ReflectorLogic.cpp
@@ -181,26 +181,28 @@ bool ReflectorLogic::initialize(void)
 {
   cfg().getValue(name(), "VERBOSE", m_verbose);
 
-  if (!cfg().getValue(name(), "HOST", m_reflector_host))
+  if (!cfg().getValue(name(), "HOST", m_reflector_host) ||
+      m_reflector_host.empty())
   {
-    cerr << "*** ERROR: " << name() << "/HOST missing in configuration" << endl;
+    std::cerr << "*** ERROR: " << name()
+              << "/HOST missing in configuration or is empty" << std::endl;
     return false;
   }
 
   m_reflector_port = 5300;
   cfg().getValue(name(), "PORT", m_reflector_port);
 
-  if (!cfg().getValue(name(), "CALLSIGN", m_callsign))
+  if (!cfg().getValue(name(), "CALLSIGN", m_callsign) || m_callsign.empty())
   {
-    cerr << "*** ERROR: " << name() << "/CALLSIGN missing in configuration"
-         << endl;
+    std::cerr << "*** ERROR: " << name()
+              << "/CALLSIGN missing in configuration or is empty" << std::endl;
     return false;
   }
 
-  if (!cfg().getValue(name(), "AUTH_KEY", m_auth_key))
+  if (!cfg().getValue(name(), "AUTH_KEY", m_auth_key) || m_auth_key.empty())
   {
-    cerr << "*** ERROR: " << name() << "/AUTH_KEY missing in configuration"
-         << endl;
+    std::cerr << "*** ERROR: " << name()
+              << "/AUTH_KEY missing in configuration or is empty" << std::endl;
     return false;
   }
   if (m_auth_key == "Change this key now!")
@@ -211,10 +213,11 @@ bool ReflectorLogic::initialize(void)
   }
 
   string event_handler_str;
-  if (!cfg().getValue(name(), "EVENT_HANDLER", event_handler_str))
+  if (!cfg().getValue(name(), "EVENT_HANDLER", event_handler_str) ||
+      event_handler_str.empty())
   {
-    cerr << "*** ERROR: Config variable " << name()
-         << "/EVENT_HANDLER not set\n";
+    std::cerr << "*** ERROR: Config variable " << name()
+              << "/EVENT_HANDLER not set or empty" << std::endl;
     return false;
   }
 
diff --git a/src/versions b/src/versions
index 0dc63f7d..f83b8fa4 100644
--- a/src/versions
+++ b/src/versions
@@ -11,7 +11,7 @@ LIBECHOLIB=1.3.3.99.0
 LIBASYNC=1.6.99.17
 
 # SvxLink versions
-SVXLINK=1.7.99.56
+SVXLINK=1.7.99.57
 MODULE_HELP=1.0.0
 MODULE_PARROT=1.1.1
 MODULE_ECHO_LINK=1.5.99.2