diff --git a/src/common.c b/src/common.c
index 2bf7b07..fc12e80 100644
--- a/src/common.c
+++ b/src/common.c
@@ -222,5 +222,49 @@ inet_aton(const char *cp, struct in_addr *inp)
  inp->s_addr = inet_addr(cp);
  return inp->s_addr != INADDR_ANY;
 }
+
+void
+warn(const char *fmt, ...)
+{
+	va_list list;
+
+	va_start(list, fmt);
+	if (fmt) fprintf(stderr, fmt, list);
+	fprintf(stderr, "%s\n", strerror(errno));
+	va_end(list);
+}
+
+void
+warnx(const char *fmt, ...)
+{
+	va_list list;
+
+	va_start(list, fmt);
+	if (fmt) fprintf(stderr, fmt, list);
+	fprintf(stderr, "\n");
+	va_end(list);
+}
+
+void
+err(int eval, const char *fmt, ...)
+{
+	va_list list;
+
+	va_start(list, fmt);
+	warn(fmt, list);
+	va_end(list);
+	exit(eval);
+}
+
+void
+errx(int eval, const char *fmt, ...)
+{
+	va_list list;
+
+	va_start(list, fmt);
+	warnx(fmt, list);
+	va_end(list);
+	exit(eval);
+}
 #endif
 
diff --git a/src/common.h b/src/common.h
index 44b4b59..5daef40 100644
--- a/src/common.h
+++ b/src/common.h
@@ -77,6 +77,11 @@ int check_topdomain(char *);
 
 #ifdef WINDOWS32
 int inet_aton(const char *cp, struct in_addr *inp);
+
+void err(int eval, const char *fmt, ...);
+void warn(const char *fmt, ...);
+void errx(int eval, const char *fmt, ...);
+void warnx(const char *fmt, ...);
 #endif
 
 #endif
diff --git a/src/windows.h b/src/windows.h
index 8680679..57442f3 100644
--- a/src/windows.h
+++ b/src/windows.h
@@ -19,13 +19,6 @@
 
 typedef unsigned int in_addr_t;
 
-/* Bad err.h fix */
-#define warn printf
-#define warnx printf
-#define err(a, b, ...) do{printf("%s ", strerror(errno)); \
-	printf(b, ## __VA_ARGS__); exit(a);}while(0)
-#define errx(a, b, ...) do{printf(b, ## __VA_ARGS__); exit(a);}while(0)
-
 #include <windows.h>
 #include <windns.h>
 #include <winsock.h>