diff --git a/src/oastat_static_web_generator.cpp b/src/oastat_static_web_generator.cpp
index 0c97693..ac458a4 100644
--- a/src/oastat_static_web_generator.cpp
+++ b/src/oastat_static_web_generator.cpp
@@ -303,6 +303,9 @@ int main(int argc, const char* argv[]) {
 	boost::program_options::notify(vm);
 	if (vm.count("help")) {
 		std::cout << desc << "\n";
+		std::cout << "\n" << "Connection details are read from the environemtn variable \"" << SAGO_CONNECTION_STRING << "\". ";
+		std::cout << "The string must be in CppDb format. \n";
+		std::cout << "Like: \"export " << SAGO_CONNECTION_STRING << "=mysql:database=oastat;username=openarena\"\n";
 		return 0;
 	}
 	if (vm.count("version")) {