diff --git a/log.cpp b/log.cpp
index b44677a..7c89dda 100644
--- a/log.cpp
+++ b/log.cpp
@@ -1,23 +1,31 @@
 #include "log.h"
 #include <iostream>
+#include <cstring>
 
 bool
 LogUnit::openLog(const char * filename)
 {
-	if (logFile.is_open()) {
+	if (isFile && logFile.is_open()) {
 		cerr << APPNAME
 			<< ": opening a new Log file, while another is already open"
 			<< endl;
-		logFile.close();
+		closeLog();
 	}
-	logFile.open(filename, ios_base::app);
 
-	return !(logFile.fail());
+	if (strcmp(filename, "/dev/stderr") == 0) {
+		isFile = false;
+		return true;
+	} else {
+		logFile.open(filename, ios_base::app);
+		isFile = true;
+		return !(logFile.fail());
+	}
 }
 
 void
 LogUnit::closeLog()
 {
+	if (!isFile) return;
 	if (logFile.is_open())
 		logFile.close();
 }
diff --git a/log.h b/log.h
index b7810be..ad548a2 100644
--- a/log.h
+++ b/log.h
@@ -9,11 +9,14 @@
 #endif
 #include "const.h"
 #include <fstream>
+#include <iostream>
 
 using namespace std;
 
 static class LogUnit {
 	ofstream logFile;
+	bool isFile;
+	inline ostream &getStream() { return isFile ? logFile : cerr; }
 public:
 	bool openLog(const char * filename);
 	void closeLog();
@@ -22,17 +25,17 @@ public:
 
 	template<typename Type>
 	LogUnit & operator<<(const Type & text) {
-		logFile << text; logFile.flush();
+		getStream() << text; getStream().flush();
 		return *this;
 	}
 
 	LogUnit & operator<<(ostream & (*fp)(ostream&)) {
-		logFile << fp; logFile.flush();
+		getStream() << fp; getStream().flush();
 		return *this;
 	}
 
 	LogUnit & operator<<(ios_base & (*fp)(ios_base&)) {
-		logFile << fp; logFile.flush();
+		getStream() << fp; getStream().flush();
 		return *this;
 	}
 } logStream;