diff --git a/include/transport/config.h b/include/transport/config.h
index 7d01eaa0..903480e9 100644
--- a/include/transport/config.h
+++ b/include/transport/config.h
@@ -28,13 +28,13 @@
 #include <boost/bind.hpp>
 #include <boost/signal.hpp>
 
-
+#define CONFIG_HAS_KEY(PTR, KEY) (*PTR).hasKey(KEY)
 #define CONFIG_STRING(PTR, KEY) (*PTR)[KEY].as<std::string>()
 #define CONFIG_INT(PTR, KEY) (*PTR)[KEY].as<int>()
 #define CONFIG_BOOL(PTR, KEY) (*PTR)[KEY].as<bool>()
 #define CONFIG_LIST(PTR, KEY) (*PTR)[KEY].as<std::list<std::string> >()
-#define CONFIG_VECTOR(PTR, KEY) (*PTR)[KEY].as<std::vector<std::string> >()
-#define CONFIG_HAS_KEY(PTR, KEY) (*PTR).hasKey(KEY)
+#define CONFIG_VECTOR(PTR, KEY) ((*PTR).hasKey(KEY) ? (*PTR)[KEY].as<std::vector<std::string> >() : std::vector<std::string>())
+
 
 namespace Transport {
 
diff --git a/spectrum_manager/src/managerconfig.h b/spectrum_manager/src/managerconfig.h
index 933843c3..48ca15b8 100644
--- a/spectrum_manager/src/managerconfig.h
+++ b/spectrum_manager/src/managerconfig.h
@@ -68,6 +68,10 @@ class ManagerConfig {
 			return m_variables[key];
 		}
 
+		bool hasKey(const std::string &key) {
+			return m_variables.find(key) != m_variables.end();
+		}
+
 		/// Returns path to config file from which data were loaded.
 		const std::string &getManagerConfigFile() { return m_file; }