diff --git a/main.cpp b/main.cpp
index 93a0848..d729cf2 100644
--- a/main.cpp
+++ b/main.cpp
@@ -51,6 +51,7 @@ int main(int argc, char* argv[]) {
 	massivedynamic::Type type     = massivedynamic::Type::MEDIUM;
 	massivedynamic::Format format = massivedynamic::Format::CONSOLE;
 	bool fromStdin                = true;
+	bool anyParameterSet          = false;
 	std::string paramData         = "";
 
 	for(;;) {
@@ -59,6 +60,8 @@ int main(int argc, char* argv[]) {
 		
 		if (result == -1)
 			break;
+
+		anyParameterSet = true;
 		const option* opt = &options[index];
 		UNUSED(opt);
 		switch(result) {
@@ -127,6 +130,8 @@ int main(int argc, char* argv[]) {
 
 		if (isatty(fileno(stdin)) || data.str().empty()) {
 			std::cerr << "ERROR: no data from stdinput." << std::endl;
+			if(!anyParameterSet)
+				printHelp();
 			exit(1);
 		}
 	} else