diff --git a/cpu/msp430-common/include/sys/types.h b/cpu/msp430-common/include/sys/types.h
new file mode 100644
index 0000000000000000000000000000000000000000..d50105720c03a094e2736d918fc34c4624efa4a5
--- /dev/null
+++ b/cpu/msp430-common/include/sys/types.h
@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2014 INRIA
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+#ifndef SYS_TYPES_H_
+#define SYS_TYPES_H_
+
+#include "msp430_types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* SYS_TYPES_H_ */
diff --git a/cpu/msp430fxyz/msp430_stdio.c b/cpu/msp430fxyz/msp430_stdio.c
index 17619dd1d5d30b41c567c0e2a9eea85859ad6259..31f783a669493c85aadf6a1a2bd5f4b20a4f85f6 100644
--- a/cpu/msp430fxyz/msp430_stdio.c
+++ b/cpu/msp430fxyz/msp430_stdio.c
@@ -18,6 +18,9 @@
  * @}
  */
 
+#include <sys/types.h>
+#include <unistd.h>
+
 #include "uart_stdio.h"
 
 /**
@@ -37,6 +40,18 @@ int getchar(void)
 int putchar(int c)
 {
     char _c = c;
-    uart_stdio_write(&_c, 1);
-    return 1;
+    return uart_stdio_write(&_c, 1);
+}
+
+/**
+ * @brief   Write nbyte characters to the STDIO UART interface
+ */
+ssize_t write(int fildes, const void *buf, size_t nbyte)
+{
+    if (fildes == STDOUT_FILENO) {
+        return uart_stdio_write(buf, nbyte);
+    }
+    else {
+        return -1;
+    }
 }