diff --git a/lib/libconfigfile/configfile.cpp b/lib/libconfigfile/configfile.cpp
index 38517d8dc..27ee51be4 100644
--- a/lib/libconfigfile/configfile.cpp
+++ b/lib/libconfigfile/configfile.cpp
@@ -451,3 +451,11 @@ void CConfigFile::setStringVector(const std::string & key, const std::vector<std
 	}
 	unknownKeyQueryedFlag = tmpUnknownKeyQueryedFlag;
 }
+
+bool CConfigFile::deleteKey(const std::string & key)
+{
+	bool ret = configData.erase(key) != 0;
+	if (ret)
+		modifiedFlag = true;
+	return ret;
+}
diff --git a/lib/libconfigfile/configfile.h b/lib/libconfigfile/configfile.h
index 6f1e052e7..f4b1a954d 100644
--- a/lib/libconfigfile/configfile.h
+++ b/lib/libconfigfile/configfile.h
@@ -106,6 +106,7 @@ class CConfigFile
 	void setUnknownKeyQueryedFlag(const bool val) { unknownKeyQueryedFlag = val; }
 
 	ConfigDataMap getConfigDataMap(){ return configData; }
+	bool deleteKey(const std::string & key);
 };
 
 #endif /* __configfile_h__ */