diff --git a/core/MyOTALogging.cpp b/core/MyOTALogging.cpp
index 179934d..693290f 100644
--- a/core/MyOTALogging.cpp
+++ b/core/MyOTALogging.cpp
@@ -36,11 +36,7 @@ void OTALog(uint8_t logNode, bool enableAck, const char *fmt, ... )
 
 	// create message
 	va_start (args, fmt );
-#ifdef vsnprintf_P
 	int n = vsnprintf_P(fmtBuffer, sizeof(fmtBuffer), fmt, args);
-#else
-	int n = vsnprintf(fmtBuffer, sizeof(fmtBuffer), fmt, args);
-#endif
 	va_end (args);
 
 	// Check number of chars
@@ -92,14 +88,9 @@ void OTALogPrintPrefix()
 {
 	char prefix[37];
 	// prepend debug message to be handled correctly by controller (C_INTERNAL, I_LOG_MESSAGE)
-#ifdef snprintf_P
 	snprintf_P(prefix, sizeof(prefix),
 	           PSTR("%" PRId8 ";%" PRId8 ";%" PRId8 ";0;%" PRId8 ";%" PRIu32 " "),
 	           OTALogBufferNode, OTALogBufferSensor, C_INTERNAL, I_LOG_MESSAGE, hwMillis());
-#else
-	snprintf(prefix, sizeof(prefix), PSTR("%" PRId8 ";%" PRId8 ";%" PRId8 ";0;%" PRId8 ";%" PRIu32 " "),
-	         OTALogBufferNode, OTALogBufferSensor, C_INTERNAL, I_LOG_MESSAGE, hwMillis());
-#endif
 	MY_SERIALDEVICE.print(prefix);
 }
 
diff --git a/examples/LogOTANode/LogOTANode.ino b/examples/LogOTANode/LogOTANode.ino
index 891cd54..aaf1384 100644
--- a/examples/LogOTANode/LogOTANode.ino
+++ b/examples/LogOTANode/LogOTANode.ino
@@ -6,7 +6,7 @@
  * network topology allowing messages to be routed to nodes.
  *
  * Created by Henrik Ekblad <henrik.ekblad@mysensors.org>
- * Copyright (C) 2013-2015 Sensnology AB
+ * Copyright (C) 2013-2018 Sensnology AB
  * Full contributor list: https://github.com/mysensors/Arduino/graphs/contributors
  *
  * Documentation: http://www.mysensors.org
@@ -67,8 +67,8 @@ void loop()
 	c++;
 
 	// A debug message
-	DEBUG_OUTPUT(PSTR("DEBUG\nc=%" PRId16 "\nmillis=" PRId32 "\n"), c, hwMillis());
+	DEBUG_OUTPUT(PSTR("DEBUG\nc=%" PRId16 "\nmillis=%" PRId32 "\n"), c, hwMillis());
 
 	// Send a log message with ACK to a node
-	OTALog(0, true, PSTR("LOG\nc=%" PRId16 "\nmillis=" PRId32 "\n"), c, hwMillis());
-}
+	OTALog(0, true, PSTR("LOG\nc=%" PRId16 "\nmillis=%" PRId32 "\n"), c, hwMillis());
+}
\ No newline at end of file
diff --git a/hal/architecture/SAMD/MyHwSAMD.h b/hal/architecture/SAMD/MyHwSAMD.h
index a567092..178ec10 100644
--- a/hal/architecture/SAMD/MyHwSAMD.h
+++ b/hal/architecture/SAMD/MyHwSAMD.h
@@ -40,6 +40,7 @@ extEEPROM eep(MY_EXT_EEPROM_SIZE, 1, MY_EXT_EEPROM_PAGE_SIZE,
 #define MIN(a,b) min(a,b)
 #define MAX(a,b) max(a,b)
 #define snprintf_P(s, f, ...) snprintf((s), (f), __VA_ARGS__)
+#define vsnprintf_P(s, n, f, ...) vsnprintf((s), (n), (f), __VA_ARGS__)
 
 // Define these as macros to save valuable space
 #define hwDigitalWrite(__pin, __value) digitalWrite(__pin, __value)