diff --git a/boards/chronos/stdio.c b/boards/chronos/stdio.c
index d7e9ceb3cb5d610970fb0f59c4a6f8edafa3a474..a6def45cb979f7e46a9d64c96fa5e81a8bd9736e 100644
--- a/boards/chronos/stdio.c
+++ b/boards/chronos/stdio.c
@@ -40,3 +40,8 @@ int getchar(void)
     /* dummy implementation */
     return EOF;
 }
+
+ssize_t write(int fildes, const void *buf, size_t nbyte)
+{
+    return -1;
+}
diff --git a/cpu/atmega_common/include/sys/types.h b/cpu/atmega_common/include/sys/types.h
index 75a30bcd15d44077d18a0aceff3e44baa2ffff00..74bf6c6ccf17231295840c2aae656855993f1c9f 100644
--- a/cpu/atmega_common/include/sys/types.h
+++ b/cpu/atmega_common/include/sys/types.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (C) 2014 Freie Universität Berlin, Hinnerk van Bruinehsen
+ *               2015 Kaspar Schleiser <kaspar@schleiser.de>
  *
  * 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
@@ -18,6 +19,7 @@ extern "C" {
 
 typedef int16_t suseconds_t;
 typedef signed int ssize_t;
+typedef unsigned int off_t;
 
 #ifdef __cplusplus
 }
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;
+    }
 }
diff --git a/sys/fmt/fmt.c b/sys/fmt/fmt.c
index 4ddc63f4b9940738926b391e61fa0c0da9f54f3d..803b1e0d639ead5f6fee50e45813486d6dfda013 100644
--- a/sys/fmt/fmt.c
+++ b/sys/fmt/fmt.c
@@ -137,6 +137,10 @@ uint32_t scn_u32_dec(const char *str, size_t n)
 
 void print(const char *s, size_t n)
 {
+#ifdef __WITH_AVRLIBC__
+    /* AVR's libc doesn't offer write(), so use fwrite() instead */
+    fwrite(s, n, 1, stdout);
+#else
     while (n > 0) {
         ssize_t written = write(STDOUT_FILENO, s, n);
         if (written < 0) {
@@ -145,6 +149,7 @@ void print(const char *s, size_t n)
         n -= written;
         s += written;
     }
+#endif /* __WITH_AVRLIBC__ */
 }
 
 void print_u32_dec(uint32_t val)
diff --git a/tests/fmt_print/Makefile b/tests/fmt_print/Makefile
new file mode 100644
index 0000000000000000000000000000000000000000..810f36de745c9bd5078c1177be38360a4df2e09c
--- /dev/null
+++ b/tests/fmt_print/Makefile
@@ -0,0 +1,6 @@
+APPLICATION = fmt_print
+include ../Makefile.tests_common
+
+USEMODULE += fmt
+
+include $(RIOTBASE)/Makefile.include
diff --git a/tests/fmt_print/main.c b/tests/fmt_print/main.c
new file mode 100644
index 0000000000000000000000000000000000000000..1b5ecfba274d1c9f0ad78d8b69000e2ba8a36386
--- /dev/null
+++ b/tests/fmt_print/main.c
@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2015 Kaspar Schleiser <kaspar@schleiser.de>
+ *
+ * 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.
+ */
+
+/**
+ * @ingroup     tests
+ * @{
+ *
+ * @file
+ * @brief       fmt print test application
+ *
+ * This test is supposed to check for "compilabilty" of the fmt print_* instructions.
+ *
+ * @author      Kaspar Schleiser <kaspar@schleiser.de>
+ *
+ * @}
+ */
+
+#include "fmt.h"
+
+int main(void)
+{
+    print_str("If you can read this:\n");
+    print_str("Test successful.\n");
+
+    return 0;
+}